y2 x // inspection
U' R' U r' D L // cross
U' L' U L U L' U' L // 1st pair
U R' U' R U' R' U R // 2nd pair
U' U R U' R' U R U' R' L U2 L' // 3rd pair
F' U' F U' R U R' // 4th pair
U' U' F R' F' R M' U R U' r' // COLL
U' R' U R' U' R' U' R' U R U R2' // EPLL