codo[6], ooid[5], dior[5], coro[5], odro[5], ordo[5],
cod[5], doc[5], doi[4], ido[4], odo[4], odr[4], ord[4], rod[4], roi[3], oro[3],
ci[3], id[3], co[3], do[3], od[3], ii[2], or[2], ro[2],
