a-a a-c aaa aac aam aao aav ac- aca acc acm aco acv ama amc amm amo amv aoa aoc aom aoo aov av- ava avc avm avo c-- caa cac cam cao cav cca ccc ccm cco ccv cma cmc cmm cmo cmv co- coa coc com coo cov cva cvc cvm cvo cvv m-o m-v maa mac mam mao mav mc- mca mcc mcm mco mcv mma mmc mmm mmo mmv moa moc mom moo mov mva mvc mvm mvo mvv oaa oac oam oao oav oc- oca occ ocm oco ocv om- oma omc omm omo omv oo- ooa ooc oom ooo oov ov- ova ovc ovo ovv v-a vaa vac vam vao vav vca vcc vcm vco vm- vma vmc vmm vmo voa voc vom voo vov vva vvc vvm vvo vvv