R' D B2 D'        // 2x2x2 on DBR (4/4)
(U' F L2 U)       // 2x2x3 on BR (4/8)
(U L2 U')         // EO on UD-axis (3-1/10)
(F2 L F2 L2 F L') // all edges + 2x2x3 on FL, leaving 3c+1tc (6/16)

skel: R' D B2 D' L F' L2 F2 L' F2 @ U L2 U2 L2 F' U
@ = F2 L F2 L' U2 R U' R' F2 R' F2 # R U' // insert 2tc alg (13-9/20)
# = F2 R F2 R' D2 F2 L' F2 L D2 // insert domino A-Perm alg (10-7/23)

rewrite: R' D B2 D' L F' L U2 R U' R2 { D2 F2 L' F2 L D2 } R L2 U2 L2 F' U
{ = M2 // insert slice (2-2/23)
} = M2 // insert slice (2-3/22)

(U2 F' D R U') // 2x2x2 on UBR (5/5)
(D2 U L U')    // EO on LR-axis (4-2/7)
(U' D F2 U) L2 // 2x2x3 on UB (4-1+1/11)
(F @ D' F2)    // sq on Ful, giving F2L-1p on U-FR + EO on UD-axis (3/14)
(F D2 F' D2)   // all edges, leaving 2c2c (4-1/17)

skel: L2 D2 F D2 F D F' U' @ F2 D' U2 L' D2 R' D' F # U2
@ = [U,  F D  F'] // insert 3c comm (8-6/19)
# = [F', D B2 D'] // insert 3c comm (8-4/23)
============================================================
backup solution:
(L' D' F' U B2)  // 2x2x2 on DBR (5/5)
L2 F U2 L' F' L  // 2x2x3 on DB (6/11)
L' F R' F' R L % // EO on LR-axis (6-4/13)
F2 U F2 U'       // F2L on R instead, leaving 3c on L (4/17)
% = [R2, B L B'] // insert 3c comm (8-1/24)

U R' D @ F B U' F2 // sq on U (7/7)
(L' F U2)          // 2x2x3 on UL (3/10)
R' D2 R' D2        // F2L on L (4/14)
R2                 // CLL, leaving 3e+1fe (1/15)
@ = D' R' L B R L' // insert 5e (6-3/18)
R2 D U' B2 U D'    // 3c comm, -1 on inverse (6-3-1/20)
============================================================
backup solution:
(U' F' L' R') R   // EO on LR-axis + sq on B + 2p + Cross-1 on U (4+1/5)
(B')              // X-Cross on U\BL (1/6)
(B' D' F D' F' B) // 2nd pair on FRu (6-1/11)
(F' D' F)         // 3rd pair on FLu (3-1/13)
(D' B' D' B D')   // ZBLS + EP-skip, leaving 3c on D (5/18)

skel: R D B' D B D F' D F2 B' D @ F' D B2 R L F U
@ = [D', F U' F'] // insert 3c comm (8-4/22)
final: R D B' D B D F' D F' B' U' F' D F U F2 D B2 R L F U

U D B (B)         // EO on FB-axis (3+1/4)
U' # R L' D' @ R' // 2x2x2 on DBR (5/9)
L' U' F2          // 2x2x3 on DR (3/12)
L U2 L' U2        // all edges, leaving 2c2c (4/16)
@ = [D R2 D', L'] // insert 3c comm (8-5/19)
# = [U L U' , R2] // insert 3c comm (8-3/24)

U2 L F' R           // ext EO on LR-axis (4/4)
(D2 F D B R2 B2 D') // 2x2x3 on DR (7/11)
R' F' L2 F R        // F2L-1p on D-FL using a conj (5-3/13)
U' F U F' U'        // all edges, leaving 2c2c (5/18)

skel: U2 L F2 L2 F R U' F U # F' U' D B2 R2 B' @ D' F' D2
@ = [B R2 B', L'] // insert 3c comm (8-5/21)
# = [U', F D F' ] // insert 3c comm (8-4/25)

(R2 L U' B')      // EO on FB-axis + sq on U - 1p + 2p (4/4)
(U2 R B2 U' L2 U) // 2x2x3 on FL (6/10)
R2 B2 R2          // F2L-1p on F-UR (3/13)
U' L' B2 L U      // all edges using a conj, leaving 3c (5/18)

skel: R2 B2 R2 @ U' L' B2 L' U B2 R' U2 B U L' R2 // NISS cancel [L U]-[U' L2] (18-3/15)
@ = L U' B2 U L' U' L B2 L' U // insert COLL to fix 3c (10-3/22)

(F)         // 2p (1/1)
L F L' F U' // 2x2x2 on UFR (5/6)
L' B L2     // 2x2x3 on UF (3/9)
R' B R      // EO on LR-axis (3/12)
B D B2 (B') // F2L-1p on U-BR (3+1/16)
D' B' D2 B  // all edges, leaving 3c (4/20)

skel: L F L' F U' L' B L2 R' B R B D B2 D' B' @ D2 B2 F' // NISS cancel [B]-[B] (20-1/19)
@ = [B, D F D'] // insert 3c comm (8-5/22)

U2 B' L2 D2 @ F2    // pseudo 2x2x2 on DFR (5/5)
U R B' (B')         // 2x2x3 on UR (3+1/9)
(L' D2 L D2)        // F2L-1p on R-DB (4/13)
L2                  // edge on BL + corner on DFL (1/14)
D2 (D2)             // shift to gather 4 unsolved corners (1+1-2/14)
F U' F U F2         // all corners, leaving 3e (5/19)
@ = D2 L R' B2 R L' // insert 3e comm (6-3/22)
============================================================
backup solution:
L B L D'            // EO on UD-axis + sq on R - 1p + 1p (4/4)
(L' B' R)           // X-Cross on R\UB (3/7)
(F2 L F B' L' F2 B) // F2L-1p on R-DB (7/14)
(B' L' B)           // all edges, leaving 3c+1tc (3-2/15)

skel: L B L D' B' @ L F2 L B F' L' # F2 R' B L
@ = [B D B', U'] // insert 3c comm (8-4/19)
# = [L, B R2 B'] // insert 3c comm (8-3/24)

R' F2 D' R' B2 // 1x1x3 bar at DL + line at RE + line at UM (5/5)
(R)            // premove to fix line on RE (1/6)
L2 U2          // 2x2x3 using above blocks (2/8)
D2             // Cross on R (1/9)
L2 F L2 F'     // 3rd pair on DFr (4/13)
...            // rest redacted, sorry
============================================================
backup solution:
F2 D                // EO on UD-axis + sq on R (2/2)
(R2 F R' B L B)     // 2x2x2 on DBL (6/8)
(R2)                // XX-Cross on B\D (1/9)
(R' L F2 R F' L')   // 3rd pair on ULb (6-1/14)
(F @ R' F R F2)     // all but 3c (5/19)
@ = [F' L F L', D'] // insert 3c comm (10-6/23)

(L' B' @ R' # U2 L' D') // 2x2x2 on DBR (6/6)
(D F' U' D' L')         // sq on Ldb, giving XX-Cross on D\B (5-2/9)
(L D F2 D' L')          // 3rd pair on FLd using a conj (5-4/10)
(R U' R')               // all corners, leaving 2e2e+1fe (3/13)
@ = B F' L' F B' U      // insert 5e (6-2/17)
# = [L':L' R U R' L F'] // insert conj of 5e (8-3/22)

(L2 F R2 F2)    // sq on Ufl (4/4)
(U F' U' B')    // X-Cross on U\FL (4/8)
B R2 B $ R B2 R // F2L-1p on U-BR (6/14)
R D @ R' D'     // F2L on U + CLL-skip, leaving 2fe on D (4-1/17)
@ = D' R2 F2 L2 U' L2 F2 R2   // insert 3e alg  ( 8-5/20)
$ = B' R2 B R L' D' R2 D L R' // insert 3e comm (10-7/23)

R F2 L'         // EO on LR-axis - 1p + 1p (3/3)
D2 B' U F'      // 2x2x2 on UFR (4/7)
D2 B2           // Cross on R (2/9)
U' D2 F' D2 F U // F2L-1p on R-UB (6/15)
U' (U')         // shift (1-2+1/15)
F' L2 F         // corner on UBL (3-2/16)
F' (F')         // shift for +1p (1-2+1/16)
D F' D' @ F     // all corners, leaving 3e, -1 on inverse (4-1/19)
@ = R2 B2 D' B2 R2 F2 U' F2 // insert 3e, -4 on inverse (8-4/23)

D' R F' L D         // sq on F + sq on B (5/5)
L F B'              // 2x2x3 on DL (3/8)
(F' U2 F)           // F2L-1p on L-UF (3/11)
(R F R2 F' R)       // sq on Rdb + all corners, leaving 3e (5/16)
([R' D' L' U', F']) // 3e comm, -2 on normal (10-2-2/22)

B' D'             // sq on Fdr (2/2)
L U' B' U2 L2 F   // pseudo XX-Cross on F\L (6/8)
B R2 F' %         // 2x2x3 on DF instead (3/11)
U B U2            // F2L-1p on F-UL (3/14)
U2 F D' R D F' U2 // EO on LR-axis using a conj (7-2/19)
U B' $ U'         // all edges, leaving 5c (3-1/21)
$ = [B, U F U']   // insert 3c comm (8-7/22)
% = [F R2 F', L2] // insert 3c comm (8-6/24)

(D B' U %)          // EO on UD-axis (3/3)
(L2 B)              // 3p (2/5)
(L2 D2 L' F2 R2)    // XX-Cross on U\R (5/10)
L' D2 $ L           // 3rd pair on BLu, giving F2L-1p on U-FL (3/13)
F' D2 F             // all edges, leaving 5c (3/16)
$ = [D2, L F' L' F] // insert 3c comm (10-8/18)
% = [U' B U, F']    // insert 3c comm ( 8-4/22)

(R2 D' R L2 D L2) // X-Cross on U\BL + 1c (6/6)
B' D B            // 2nd pair on BRu (3/9)
R' D2 R           // 3rd pair on FRu, giving F2L-1e on U-FL (3/12)
F' D' F D2        // all edges, leaving 3c+1tc (4/16)

skel: B' D B R' D2 R # F' D' F D2 L2 D' L2 R' D R2 @
@ = [R2, D' L' D] // insert 3c comm (8-5/19)
# = [R' B R,  F2] // insert 3c comm (8-3/24)

(R' U' L)                    // EO on LR-axis (3/3)
(D2 B R2 U F2 D2 L2)         // X-Cross on U\FL (7/10)
(% F B' D B F')              // pair on FRu + pair on BRu, giving F2L-1e on U-BL (5/15)
(F L D L' $ D' F' D)         // CLL, leaving 2e2e+1fe (7-2/20)
$ = L D' L' D' U B D B' U' D // insert 3e, leaving 2e2e (10-8/22)
% = L2 D2 L2 U2 R2 U2        // insert 2e2e (6-4/24)

D' B' L' B      // EO on FB axis (4/4)
(L' U2 R2)      // 2p (3/7)
(L F2 B2 U)     // 2x2x3 on UB (4/11)
(D' R F2 R' D') // F2L-1p on B-DR (5/16)
(D' F2 D)       // sq on Fur (3-1/18)
(D' L D' L' D2) // F2L on U instead + all edges, leaving 3c on D (5-2/21)
[B' L B, R']    // 3c comm (8-6/23)

B2 D2 R F'         // EO on FB-axis + 1p (4/4)
(F2 D R')          // 2x2x2 on DBR (3/7)
(L2 U2)            // 2x2x3 on BR + pair on BLu (2/9)
(U' L' F2 L U)     // edge on UL using a conj, giving F2L-1p on B-DL (5-1/13)
(L D' L' D2 F2 D') // ZBLS + LL-skip (6/19)

(U F2 R' F2 L F D)    // 2x2x3 on DR (7/7)
(L U' B L2 B')        // F2L-1p on R-UF (5/12)
(U L' B L2 B' U' @ L) // all but 3c (7/19)
@ = [U B' U', F']     // insert 3c comm (8-3/24)

F2 R2 B2 L                   // silly EO on LR-axis + 2p (4/4)
(B' L2 U R2 B' U' F')        // XX-Cross on U (7/11)
(F D2 # F')                  // 3rd pair on FRu (3-2/12)
(D' L' @ D' L D')            // all corners, leaving 2e2e (5/17)
@ = L R' B' L B L' R D' L' D // insert 3e comm (10-7/20)
# = D' U L' D L U' D F' D' F // insert 3e comm (10-6/24)

(B' F R U) // EO on UD-axis + sq on F (4/4)
(L @)      // EO on LR-axis + 1p (1/5)
(B2 F U2)  // sq on Ruf (3/8)
(R2 F R2)  // 2x2x3 on UF (3/11)
(B)        // F2L-1c on U-BL (1/12)
(D2)       // all edges, leaving 5c (1/13)
@ = [L', B' R B] // insert 3c comm (8-3/18)

rewrite: D2 B' R2 F' R2 U2 F' B R B L' B' # R' B U' R' F' B
# = [B L' B', R2] // insert 3c comm (8-4/22)

(F D' L)          // EO on LR-axis (3/3)
D' F' U'          // 2p + 3/4 Cross on U (3/6)
B D B2            // X-Cross on U\BL + edge on DL + edge on DF (3/9)
F D' F2 D $ F     // 1x1x3 on FL, giving F2L-1p on L-DB instead (5/14)
B' D % B D'       // all edges using Sledge, leaving 5c (4/18)
$ = [D' F2 D, B'] // insert 3c comm (8-9/17)
% = [D', R' U R ] // insert 3c comm (8-2/23)

(D2 B % R' D2 F)            // EO on FB-axis (5/5)
(L2 B2 D L2 D2 F2 $ R2 D)   // F2L-1p on B-UL (8/13)
(U' F2 U F2)                // all corners, leaving 2e2e (4/17)
% = R B R' L U' L'          // insert 5e alg (6/23)
$ = F2 D2 L2 U2 B2 D2 R2 U2 // insert 3e alg (8-6/25)

(B R D' F)        // EO on FB-axis (4/4)
L' B2 U' R2 U' R' // X-Cross on U\FR (6/10)
R F D' F' R'      // 2nd pair on BRu (5-2/13)
R F @ L2 F' R' L2 // 3rd pair on BLu (6-4/15)
F' (F')           // shift improves EO on FB-axis (1+1-2/15)
(D R' B' D2 B R)  // F2L on B instead, leaving 3tc on F (6-6/15)
@ = D F2 D' U' R U L' U L' U R' U2 L2 // insert 3tc alg (13-5/23)

F R L2 D' F2 D'  // 2x2x2 on DFL (6/6)
B' U' @ R2       // 2x2x3 on DF (3/9)
B' U' L' B' L    // F2L-1p on F-UR + sq on B (5/14)
B' R B' R'       // all corners, leaving 3e (4/18)
@ = [U B U', M2] // insert 3e comm (10-6/22)

(B2 L' F D)         // EO on UD-axis + 5p (4/4)
(B2 D2 F R2)        // 2x2x2 on DBR (4/8)
(L2 F')             // 2x2x3 on DR + EO on FB-axis (2/10)
(L2 U2)             // 2x2x3 on UB, leaving 4c2e (2/12)
(U2 L U' L U L2 U') // force parity change using Sune (7-3/16)
(L @ U')            // all but 3c (2/18)
@ = [L' U L U', B'] // insert 3c comm (10-5/23)

(D L2 D2 L U2 F U R2)        // 2x2x3 on UB (8/8)
D2 F' D F $ D'               // sq on Dbl, giving F2L-1p on B-DR (5/13)
R U F U' F R' F              // F2L on B + CLL-skip using wrong ZBLS, leaving 2e2e (7/20)
$ = F' D' F D U' R' D R U D' // insert 3e comm (10-8/22)

rewrite: D' U' R' D R U % D2 R U F U' F R' F R2 U' F' U2 L' D2 L2 D'
% = U' R' D' R' D2 R D R U F2 // insert 3e alg (10-7/25)

(D' @ F' L)         // EO on LR-axis (3/3)
@ = R2              // insert ext for +1p (1/4)
R2 B2 U2 L2 U B' F2 // 2x2x3 on DR (7/11)
(U2)                // F2L-1p on R-UF (1/12)
(L2 F' D F' D' F2)  // leaves 3c3e (6/18)

skel: R2 B2 U2 % L2 U B' D F D' F # L2 U2 L' F R2 D // NISS cancel [F2]-[F2] (18-2/16)
% = U2 B2 R' L U2 F2 R L' // insert 3e (8-6/18)
# = [F' D F, U]           // insert 3c (8-5/21)

(U' D2 B) F @        // EO on FB-axis + sq on Bdr (3+1/4)
L' U' L' F2 B2 D' B2 // 2x2x3 on DR (7/11)
(L')                 // F2L-1c on D-FL (1/12)
(U')                 // all edges, leaving 5c (1/13)
@ = [U2, L' D' L]    // insert 3c comm (8-2/19)

rewrite: F U2 L' D' L # U2 L' D U' L' F2 B2 D' B2 U L B' D2 U
# = [L' D L D', F2]  // insert 3c comm (10-6/23)

F2 U2 B2 R2 F     // pseudo Cross on D (5/5)
F' U' F           // corner at DBR (3-2/6)
D2 (D)            // X-Cross on D\BL (1+1/8)
L' U2 @ L         // 1p (3/11)
L' F R' F' L U R  // F2L-1p on D-FL (7-2/16)
U F2 R' F' R F'   // ZBLS + EP-skip, leaving 3c on U (6/22)
@ = [U2, L D2 L'] // insert 3c comm (8-6/24)

D2 L' U R (R')   // EO on LR-axis (4+1/5)
(U' D' B U2)     // 2x2x2 on UFL (4/9)
(D' B2)          // 2x2x3 on UL (2/11)
R2 D R2 D2       // sq on Dfl (4-1/14)
D B' D' B2 R2 B' // ZBLS + EP-skip, leaving 3c on R (6-1/19)

skel: D2 L' U R' D R2 D' B' D' B2 R2 B D U2 B' D U R @ // NISS cancel [B']-[B2] (19-1/18)
@ = [R' D R, U] // insert 3c comm (8-3/23)

(D2 B L')        // EO on LR-axis (3/3)
F' D2 B' @       // sq on D (3/6)
U F' D2 B'       // pseudo F2L-1 on R-UB + EO on FB-axis (4/10)
L U2 L2 U L U' L // all but 3e using 2-gen, -1 on NISS (7-1/16)
@ = B D B' U' D L D' L' D' U // insert 3e comm (10-4/22)

(F' R' D' B)    // EO on FB-axis (4/4)
(U' R' L2 D R2) // 2x2x2 on UBR (5/9)
(R B' U B R')   // sq on D using a conj (5-1/13)
(D F2)          // F2L-1p on R-DF (2/15)
(F' D2) F' D2   // rNISS shift (2-1+2/18)
(L' F D' F' L)  // direct finish (5/23)

(U' L' F2 B2 L' B' R') B' // XX-Cross on B + 1c (7+1/8)
L D' L' @ D               // 3rd pair on DLb (4/12)
D R2 F R F' R2 D' F2      // ZBLS + EP-skip, leaving 3c on F (8-1/19)
@ = [L, D R' D']          // insert 3c comm (8-5/22)

D L2              // 2p (2/2)
B' L' U           // EO on UD-axis (3/5)
(F D2 B')         // 2x2x2 on DBL (3/8)
B' R2 B @ R2 U2   // 2x2x3 on BL (5/13)
F R F R2 F2 R2    // F2L-1c on L-UF + all edges, leaving 5c (6/19)
@ = [B' R2 B, L2] // insert 3c comm (8-6/21)

rewrite: D L2 B' L' U L2 B' # R2 B L2 R2 U2 F R F R2 F2 R2 B D2 F'
# = [B, R' F' R] // insert 3c comm (8-3/26)

(L2 D')       // sq on R (2/2)
(F R2 B)      // EO on FB-axis + sq on D (3/5)
(D2 L' R' U') // pseudo 2x2x3 on FR + pair on BRd (4/9)
(U' L2 U R)   // edge on UB using keyhole, giving F2L-1p on R-DB (4-1/12)
(L)           // sq on Luf, giving F2L-1p on 3 axes (1/13)
(D2) D'       // 1p (1+1/15)
(R' $ D B2 % D B2 D' R) // all corners using a conj, leaving 2e2e (7/22)
% = [B2 D2]*3           // insert 2e2e (6-4/24)
$ = R D2 R' L B2 L'     // insert 3e   (6-7/23)

(R' D' R B' D L' U') // X-Cross on F\UR + sq on B + EO on FB-axis + EO on UD-axis (7/7)
R D' R' D            // make pair w/o breaking sq on LL/B (4/11)
D2 L2 D2 L2          // F2L-1c on F-UL (4-1/14)
U R B' R' U'         // all corners using a conj, leaving 3e+2fe (5/19)

skel: R D' R' D' L2 D2 L2 $ U R B' % R' L D' B @ R' D R // NISS cancel [U']-[U] (19-2/17)
% = B R L' D' L R'        // insert 5e, to convert to 5e (6-5/18)
$ = L2 D2 L2 D U B2 D' U' // insert 2e2e alg, leaving 3e (8-10/16)
@ = B R2 B' F D2 F'       // insert 3e (6-1/21)

R U D' L'       // line on DS (4/4)
D R2 D' B'      // X-Cross on D\FL + 1c (4/8)
(R2 U R' U' R2) // F2L-1p on D-BL (5/13)
(L U2 L')       // -2 bad edges on LR-axis (3/16)
(L F' L F L2)   // pair on UFr, giving F2L-1 on 3 axes (5-2/19)
(L' B L B')     // direct finish with Sledge, -2 on NISS (4-1-2/20)

F (L' F' L2 B')   // EO on FB-axis + 1p (1+4/5)
L2 B2 L' U R'     // 2x2x3 on UR (5/10)
(L D2 @)          // sq on D + sq on L (2/12)
(L' D' L' D2)     // leaves 3c on F (4/16)
@ = [U R2 U', L'] // insert 3c comm (8-2/22)

R' L F L            // EO on LR-axis (4/4)
(U2 F' B' U' F' U') // 2x2x3 on UR (6/10)
B' @ L2 B           // EO on FB-axis + sq on D (3/13)
D'                  // F2L-1p on R-DF (1/14)
L2 D F' D' F L2     // F2L on R + CLL-skip, leaving 3e on L (6/20)
@ = B L' F' B D B' D' F B' L // insert 3e comm (10-7/23)

(U2 B' U')          // 2x2x2 on UFL (3/3)
(U' B2 D2 U R)      // sq on Ruf, giving 2x2x3 on UF (5-1/7)
(R' U' B2 U $ R)    // EO on LR-axis using a conj (5-4/8)
(% D2 B' D' B' D')  // sq on Dfl + all edges, leaving 5c (5/13)
% = [R', B' L B]    // insert 3c comm ( 8-2/19)
$ = [U', B' L B L'] // insert 3c comm (10-9/20)

(D F' B2 @ U' F) // 2x2x2 on UFR (5/5)
@ = R2           // insert move to solve edge on DF (1/6)
(L2) L'          // edge on FL, giving X-Cross on F\UR (1+1/8)
B2 R' D' B' D R  // 2nd pair on DLf (6/14)
R' B R           // 3rd pair on DRf (3-2/15)
L' B' D' B2      // sq on B (4/19)
D2 L' D' L2 B'   // direct solve (5/24)

D2 R U R D2 L R2  // X-Cross on U\BL + 1c + 1e (7/7)
U' B' D2 B U      // F2L-1p on U-FL using pseudoslot (5/12)
D @ L B D2 B' L'  // sq on Dfr + all edges, leaving 3c on L (6/18)
@ = [D', L' U' L] // insert 3c comm (8-3/23)

(D B' L U R D')        // pseudo 2x2x2 on DFR (6/6)
(D' B2 D2)             // 2x2x3 on DR (3-1/8)
(F U F' % L B' U B L') // F2L-1fe on D-BL (8/16)
(L F2 R' F' R)         // 1x2x3 on F (5-2/19)
($ F' L')              // fix F2L-1fe + CLL-skip, leaving 3e+1fe (2/21)
$ = R' F R F' B U' F' U B' F // insert 3e comm (10-10/21)
% = F U' F' L R' D F D' R L' // insert 3e comm (10- 8/23)

(F R) R       // EO on LR-axis (2+1/3)
(D F U D' F2) // 2x2x2 on UFR (5/8)
(B' D2)       // Cross on F + Cross on R (2/10)
B U B U'      // 2nd pair on ULf (4/14)
[U B', D']    // 3rd pair on DLf (6-4/16)
B'            // all edges, leaving 5c (1/17)

skel: R B U D' B % U' D B' D2 B F2 D U' F' D' $ R' F'
$ = [D F D', B'] // insert 3c comm (8-6/19)
% = B' D R2 D' B D B' R2 B D' // insert 3c COLL (10-6/23)

(L' D F R')      // sq on U (4/4)
(U2 B U ^)       // 2x2x2 on UBL (3/7)
(D F' L D' L')   // sq on F + sq on D, giving pseudo-pseudo F2L-1 on L-DF (5/12)
(R' D' F)        // leaves 3c+1tc (3/15)
([F', D B' D'])  // 3c comm (8-4/19)
^ = [U' B' U, F] // insert 3c comm (8-5/22)
============================================================
backup solution:

F2 R U F2 R       // 2x2x2 on UBR (5/5)
D F'              // 2x2x3 on UR  (2/7)
(D' L2 D' L' D)   // sq on Dfr, giving F2L-1p on R-DB (5/12)
(D2 F' D' F D' L) // all edges, leaving 5c (6-1/17)

skel: F2 R U F2 R D F' L' @ D # F' D F D L D L2 D
@ = [L , F R2 F'] // insert 3c comm (8-4/21)
# = [D', F U' F'] // insert 3c comm (8-5/24)

final: F2 R U F2 R D R2 F' L' F R2 U' F' D F U F2 D F D L D L2 D // (24)

B D2 F2 R    // EO on LR-axis + 2p - 1p (4/4)
U F D' R2    // 1x2x3 on B (4/8)
D2 F' B2     // F2L-1c-1e on D (3/11)
(U2 B L2 B') // edge on DL, giving F2L-1p on D-FL (4/15)
U            // fix parity using 1qt (1/16)
(B L2) B L2  // shift last 2 moves to normal (2-4+2/16)
(U L2 U')    // all edges, leaving 5c (3/19)

skel: B D2 F2 R U F D' R2 D2 F' B2 U B @ L2 U L2 U' B' U2
@ = B' U' F U B U' F' # U // insert 3c comm ( 8-6/21)
# = [F, U R' U' R]        // insert 3c comm (10-6/25)

U L' R D2 R'     // sq on Ldf + sq on U (5/5)
U' R' U2 B       // 2x2x3 on UR (4/9)
L2 (L2)          // rNISS shift, giving F2L-1p on U-FL (1+1/11)
L' F L F' @ D'   // ZBLS using Sledge, leaving 3c (5-1/15)
@ = [F L' F', R] // insert 3c comm (8-6/17)