R' U' F R2 B' D B D2 R' F U R2 B2 D2 R2 D2 L2 B D2 L2 R' D2 R' U' F
L F' U' F2 R D' F U2 F' U D L' F' U2 F' R U L U' R' U
<L> F' U' R // ext 2x2x2 on DBR (4/4) R' F2 R F U2 // Cross on B + 3p (5-2/7) F' @ U // sq on L (2/9) L' (L') // shift for 2x2x3 on DB (1+1/11) F' U2 F' U // F2L-1c on D-FR, leaving 5c (4/15) [U' R U, L] // 3c comm, -2 on inverse (8-2-2/19) @ = [F U2 F', D'] // insert 3c comm (8-6/21)
R' U' F R2 U' B' U L2 B2 U B2 R2 D U2 R2 F' L D' U2 R U L U' R' U' F
F2 L' U2 B U D' L' B' U2 F U2 B U' L2 U' F B' R U2 R' B U
F2 L' U2 B D' // 2x2x3-1e on BR-UB (5/5) (U' F2) // 2x2x3 on DR instead (2/7) U L' U2 // F2L-1p on R-UF (3/10) U2 B' U2 // 1x2x3 on Ur, but breaks sq on Bdr (3-2/11) F U2 B U2 @ F' // all but 3e on L, -1 on inverse (5-1/15) @ = [U L2 U', S'] // insert 3e comm (10-3/22)
R' U' F D L' U' R' D' B' D2 F' R2 F2 L F' R2 F D2 R2 D2 B D2 B R' U' F
D L' B D L2 B' R U2 L B' L2 U2 F2 B' U' F2 U B U' F' L' F' L U F2
D L' B D // EO on UD-axis + 1p (4/4) L2 B' R U2 B' // 2x2x3-1e on DR-FR (5/9) B L B' L2 U2 // 2x2x3 on BR + sq on Luf + sq on Fdl, leaving 3c3e (5-2/12) F' L' F' L @ F2 // all edges, leaving 5c (5/17) @ = [L' F L F', U'] // insert 3c comm (10-7/20) rewrite: D L' B D L2 B' R U2 L B' L2 U2 F2 U' # F L' F' L U F2 # = [U B' U', F2] // insert 3c comm (8-3/25) // post-attempt found insertions for 3c3e to give a score of 24