a-a a-c aaa aac aak aam aao aav ac- aca acc ack acm aco acv aka akc akk akm ako akv ama amc amk amm amo amv aoa aoc aok aom aoo aov av- ava avc avk avm avo c-- caa cac cak cam cao cav cca ccc cck ccm cco ccv cka ckc ckm cko cma cmc cmk cmm cmo cmv co- coa coc cok com coo cov cva cvc cvk cvm cvo cvv ka- kaa kac kak kam kao kav kca kcc kck kcm kkc kkk kkm kkv kma kmc kmk kmm kmo koa koc kok kom koo kva kvk kvm kvo kvv m-o m-v maa mac mak mam mao mav mc- mca mcc mck mcm mco mcv mka mkc mkk mkm mko mkv mma mmc mmk mmm mmo mmv moa moc mok mom moo mov mva mvc mvm mvo mvv oaa oac oak oam oao oav oc- oca occ ock ocm oco ocv oka okc okk oko om- oma omc omm omo omv oo- ooa ooc ook oom ooo oov ov- ova ovc ovo ovv v-a vaa vac vak vam vao vav vca vcc vcm vco vka vkm vm- vma vmc vmm vmo voa voc vok vom voo vov vva vvc vvm vvo vvv