t0yst s0ys r0yst0 q0yst p0ys
49xs 39xst0 29xst 19xs 09xst0
fjxst0 ejxst djxs cjxst0 bjxst
qswst psws oswst0 nswst msws
11vs 01vst0 z1vst y1vs x1vst0