1M1 1M2 2L1.5 2L2.5 2M1 2M2 2M3 2R1.5 2R2.5 3L1.5 3L2.5 3M1 3M2 3M3 3R1.5 3R2.5 4L1.5 4L2.5 4M1 4M2 4M3 4R1.5 4R2.5 5M1 5M2 5M3