b3dkn c3dknb d3dk e3dkn f3dknb
0teknb 1tek 2tekn 3teknb 4tek
pkfk qkfkn rkfknb skfk tkfkn
ebgkn fbgknb gbgk hbgkn ibgknb
31gknb 41gk 51gkn 61gknb 71gk