ssuk rsukm1 qsukm psuk osukm1
31tkm1 21tkm 11tk 01tkm1 z1tkm
ebtkm dbtk cbtkm1 bbtkm abtk
pksk okskm1 nkskm mksk lkskm1
0trkm1 ztrkm ytrk xtrkm1 wtrkm