x2 y // inspection
B2' F2 R D' R' // cross
U' R U' R' U R U R' // 1st pair
y' U R U' R' U' R U' R' U R U' R' // 2nd pair
y' U y' R' U R U' R' U' R // 3rd pair
U' F' U' F // 4th pair
U R U R' U R' F R F' R U2' R' // OLL
U R' U2 R' D' R U' R' D R U R U' R' U' R U // PLL