a-a a-c aaa aac aah aam aao ac- aca acc ach acm aco aha ahc ahh ahm aho ama amc amh amm amo aoa aoc aoh aom aoo c-- caa cac cah cam cao cca ccc cch ccm cco ch- cha chc chh chm cho cma cmc cmh cmm cmo co- coa coc coh com coo haa hac hah ham hao hca hcc hch hcm hco hha hhc hhh hhm hho hma hmc hmh hmm hmo hoa hoc hoh hom hoo m-o maa mac mah mam mao mc- mca mcc mch mcm mco mha mhc mhh mhm mho mma mmc mmh mmm mmo moa moc moh mom moo oaa oac oah oam oao oc- oca occ och ocm oco oha ohc ohh ohm oho om- oma omc omh omm omo oo- ooa ooc ooh oom ooo