a3ag b3aga c3aga2 d3ag e3aga
ztbga 0tbga2 1tbg 2tbga 3tbga2
okcga2 pkcg qkcga rkcga2 skcg
dbdg ebdga fbdga2 gbdg hbdga
21dga 31dga2 41dg 51dga 61dga2