single!

R B' R2 B2 U' F2 U' L2 U2 L2 R2 D' L2 U' B' U B2 R' B R' X2//Inspection U F2//Cross R U' R2 U' R//1 pair U' R U R' U' R U R'//2 pair y2 U' R U' R' U R U R'//3pair U' R' U' R U' R' U R//4 pair U2 R U R' U' R' F R F'//OLL U' R U R' F' R U R' U' R' F R2 U' R'//PLL U'//AUF 53 moves 9.1 TPS