15lr 25lrb 35lrbn 45lr 55lrb

qwmrb rwmrbn swmr twmrb uwmrbn

fnnrbn gnnr hnnrb innrbn jnnr

4dor 5dorb 6dorbn 7dor 8dorb

t4orb u4orbn v4or w4orb x4orbn