A last layer algorithm set where the 2 pieces of the solved face are adjacently swapped.
Mostly, the solved bar should be on the back, only for some cases the bar must be held on left (AKA 'LEG-1').
[U2] R U R' U F R U' R2' F' R
alt: [x'] U' R' F R2 F' R2' U2' R
R U R' F2 U F R U R'
[U2] F R' F' R U R' F' R2 U R'
F' U R U' R' U F R U R'
R' F R2 U' R' U R U' R' F
[U] R U' R' U R U' R' U F R U' R'
[U'] R' F R2 U R' F' U' R U' R'
alt: [U] B U' R2' F2 U' F
[U'] R U' R' F' U' F2 R U' R'
alt: [U2] R U' F2 R U2' R U' F
[U2] F' R U R' U' R U R2' F' R
[U2] R U' R' F' U' R U R' U' F
R U' R2' F R U' R' F R F'
[U] R U R' F' U' R U R' U' R U R'
[U2] R2 U R U' R2' F R U2' R' F
alt: [U] F R U' R2' F' R U R' F' R
[U] F' R' F R2 U R' U' R U R'
alt: [U'] R U2' R' F R U' R' F' R U R'
R2 B2 U' R' U' R U' R' U R'
[U2] R U' R2' F R U R U2' R'
alt: R' F R2 U' R' U' R' F2 R
[U'] R U' R' U2' F R U2' R' F
[U2] R U R2' F' R F R' F' R
alt: R' F' R2 U R' F' R U R'
[x U2] R' U R' U' R U' R' U' F2 R2
[U'] R U' R2' F R2 U R' U' R U' R'
alt: [x'] R2 U' R' U2 R' U2' R'
[U] R' F R F' U R U' R' F R U' R'
alt: [U2] R U' R' U R U' R' U' F R U' R'
[U2] R' F R2 U' R' U x' R U R'
F' U2 R U2' R' U2' F
[U] R' F R F' R' F R2 U' R'
R' F R2 U R' F' R U2 R'
alt: R U2 R' F R U' R2' F' R
R' U R2 U' R2' U' F R2 U' R'
[U2] R' F R F' R' F R U R U2' R'
alt: [U] R' F R U' R' F R2 U R' F'
[U] F R U' R' F' R U R' F' R U R'
alt: R U' R' U R U' R2' F' R F
R U R' F' U R U R' U' R U R'
[U] R' U2 F R U2 R U' R2' F
[U] F U' R' F R U' F2 R U R'
alt: [x2 U] R' F R2 U' R2' F R' F2 R2
[U'] R' F R2 U' R2' F R
alt: [U'] R U' R2' F R2 U' R'
[U'] R U' R' U R U' R' F R U' R'
[U'] F R' F U' F2 R U R
R U' R2' F R U R U' R' U' R' F R F'
F R U' R' F R U2 R' U F'
R' F R2 U' R2 U' F U R
F' U R U' R2' F2 R U' F
[U2] R' F R F' U2 F R U2 R' F
R U R' F' R U R' U' R U R'