R' U' F D' R' U2 B R2 B' D2 L2 F' D2 U2 F' U B' L' U2 B2 D2 F U2 R' U' F
F2 U' B R D L' B' D2 B2 D' F D B2 D' F U' F2 U2 F U B2
I DNS-ed this officially, but later that day found this 21 in under 30 mins: F2 D2 (B2) // 2x2x2 on DBR (2+1/3) D2 U' B R D L' B' D // 2x2x3 on DB + EO on LR-axis (8-2/9) @ F2 U' F2 U2 F U // all but 3c (6/15) @ = [D B2 D', F] // insert 3c comm (8-2/21)