a-a a-c aaa aac aah aam aao aas ac- aca acc ach acm aco acs aha ahc ahh ahm aho ahs ama amc amh amm amo ams aoa aoc aoh aom aoo aos as- asa asc ash asm aso ass c-- caa cac cah cam cao cas cca ccc cch ccm cco ccs ch- cha chc chh chm cho chs cma cmc cmh cmm cmo cms co- coa coc coh com coo cos csa csc csh csm cso css haa hac hah ham hao has hca hcc hch hcm hco hcs hha hhc hhh hhm hho hhs hma hmc hmh hmm hmo hms hoa hoc hoh hom hoo hos hsa hsc hsh hsm hss m-o maa mac mah mam mao mas mc- mca mcc mch mcm mco mcs mha mhc mhh mhm mho mhs mma mmc mmh mmm mmo mms moa moc moh mom moo mos msa msc msh msm mso mss oaa oac oah oam oao oas oc- oca occ och ocm oco ocs oha ohc ohh ohm oho ohs om- oma omc omh omm omo oms oo- ooa ooc ooh oom ooo oos os- osa osc osh osm oso oss saa sac sah sam sao sas sca scc sch scm sco scs sh- sha shc shh shm sho shs sma smc smh smm smo sms soa soc soh som soo sos ss- ssa ssc ssh ssm sso sss