U B2 D B //EO
U B2 U2 B2 L U' D //11+2 4c4e
[L' D2 F2 R'] //HTR
U2 F B' D2 F' B //leave slice
[ ] = L2 R F2 L2 R2 D2 L' //solve slice (+3)

(U F' U) //EO
(R') B R //DR 6+5
(B' L2 [B' D2 B R2 D2 B L2 D2 F') //HTR 
(U2 F2 D2 B2]) //leave slice
[ ] = F' R2 F R2 D2 F U2 L2 B' D2 F2 U2 F2 //solve slice (+0)

F2 L' U ' F' B //EO
(R U) L D R D' //DR 11+2 4c4e
L2 D2 R' D2 B2 L' //HTR
F2 L2 U D' R2 F2 D' U //finish

Spent too much time on:
(U F2 R F B) D2 R2 D' L D2 R //variant heavy 11+3

U' D' F' //EO
D R'  U' D2 F2 B2 R2 D2 R //11+1 -> 12+1 extention
(L2 B2 U2 R2 D') //HTR
(F B' L2 D2 F B') //finish

B L R B R //EO
U' B U D2 F //DR 10+4 2c4e
D (B2 L2 U R2 D2 R2 D' L2 D') //HTR 
(B2 D2 B2 L2 R2 B2 U D' B2 U' D) //finish, just to have something. slice in 27, but didn't even bother

(L' D2 F' U R) //EO
(B' D' F2 D2 B U) //DR 11+3 4c0e
D2 F' D2 L2 F D2 B2 R2 B //HTR
U2 L2 F2 R2 //finish

L D U2 B' //EO
R F2 D B2 D' //DR 9+1 4c2e
(U2 [L' U2 L' F2 U2 F2 L]) //HTR
(U2) //slice in 18
[ ] = R' F2 R' B2 D2 R L' D2 R //solve slice (+2)

There was also:
(U2 L B2 L D2 B2 D2 L' B2 L2) //slice in 19

B R' B' U //EO
(B L2 F' R2 L' B' R B) //12+1 4c4e
(F2 D2 F2 L') //HTR
(F2 B2 U D B2 U' D' R2) //finish

(R) F2 R //EO
B' D B2 D2 F U F' //DR 10+2 4c4e
[U B2 R2 U2 R2 U] //HTR
F2 L2 F2 B2 //leave slice in 20
[ ] = D L2 B2 U2 B2 U2 D' //solve slice (+1)

(L' R D' R) //EO
(D' F L2 U' F2 U' F) //DR 11+2 4c4e
(L2 U F2 R2 D) //HTR
(L2 B2 L2 D2 R2 U2 F2 D2) //finish, this is slice in 22 via blockyfish, but no +1 then

Had other slices in 22 and 23 as well, nothiing good...

(D' L' B' U2 R) //EO
D' (D2 F2 U' L2 D) //DR 11+2 4c4e
([B' U2 L2 B2 D2 F]) //HTR
(L2 D2 B2 L2) //leave slice in 21
[ ] = B' U2 L2 F' B' R2 B' F2 //solve slice (+2)

(F2 L' D' F U) //EO
(B2 R2 U2 D2 R' B') //DR 11+2 4c2e
(U2 B2 L') B2 U2 L2 D2 R //HTR
F' B' R2 F' B //finish

D2 L R2 F //EO
U2 R U2 L' D L' U' //DR 11+1 4c4e
F2 B2 [L' //HTR
F2 B2 R2] U2 D2 B2 //leave slice in 20
[ ] = R' D2 L R' F2 L2 //solve slice (+2)

U F (D' B') //EO
D R (D' B2 R) //9+4 2c2e
B2 D' F2 [U R2 D'] F2 R2 U //HTR
B2 R2 F2 L2 //leave slice
[ ] = D B2 U D2
21 opt, silly miss