F' L F U' R U F2 L2 U' L' B D' B' L2 U (3×3 pattern) … but for 5×5 we need inner layers.
F2 U F2 U' F2 L2 U' B2 U L2 (3×3 stripe sequence) Then 3R2 U2 3L2 D2 to stripe inner layers. rubik cube 5x5 pattern algorithms pdf
Simpler one‑piece sequence:
Alternative single sequence: M' (U2 D2) M (U2 D2) where M = slice between R and L. Effect: Each center block (3×3) moves to the opposite face. F' L F U' R U F2 L2