a8ak b8ak1 c8ak12 d8ak e8ak1
zybk1 0ybk12 1ybk 2ybk1 3ybk12
opck12 ppck qpck1 rpck12 spck
dgdk egdk1 fgdk12 ggdk hgdk1
26dk1 36dk12 46dk 56dk1 66dk12