B2 U2 B2 D L2 D' R2 D L2 B2 F' U L' U F' R' U R2 B2 F2 D
y2 // inspection
D R D F R // cross
U' R' U' R // 1st pair
u' U R U' R' U D // 2nd pair
R U' R' U F' L F L' // 3rd pair
U R U' R' U' F' U' F // 4th pair/ZBLS
U2' R U' R2' U' D' R U' R' U2' D R2 U R' U' // ZBLL
