(R U R' U) (R U R' F') (R U R' U') R' F (R2 U' R') (U2 R U' R')
( R U R' U ) ( Jb- perm ) ( U2 R U' R' )
Setup R U R' U2' R U R2' F' R U R U' R' F R U' R' U' R U' R'
Case 3 of 4 in Diagonal Swap
(R U R' U) (R U R' F') (R U R' U') R' F (R2 U' R') (U2 R U' R')
( R U R' U ) ( Jb- perm ) ( U2 R U' R' )
Setup R U R' U2' R U R2' F' R U R U' R' F R U' R' U' R U' R'
Case 3 of 4 in Diagonal Swap