a-a a-c a-z aaa aac aam aao aar aaz ac- aca acc acm aco acr acz ama amc amm amo amr amz aoa aoc aom aoo aor ar- ara arc arm aro arr arz az- aza azm azo azz c-- caa cac cam cao car caz cca ccc ccm cco ccr ccz cma cmc cmm cmo cmr co- coa coc com coo cor coz cra crc crm cro crr crz cz- czc czm czo m-o m-r maa mac mam mao mar maz mc- mca mcc mcm mco mcr mcz mma mmc mmm mmo mmr mmz moa moc mom moo mor moz mra mrc mrm mro mrr mrz mza mzm oaa oac oam oao oar oc- oca occ ocm oco ocr ocz om- oma omc omm omo omr omz oo- ooa ooc oom ooo oor or- ora orc orm oro orr orz oza ozm ozo ozz ra- raa rac ram rao rar raz rca rcc rcm rco rcr rma rmc rmm rmo rmr roa roc rom roo ror roz rra rrc rrm rrr rza rzm rzo zaa zac zam zao zar zaz zco zma zmc zmm zo- zoa zoc zom zoo zor zro zzr zzz