a-a a-c aaa aac aae aak aam aao aav ac- aca acc ace ack acm aco acv aea aec aee aek aem aeo aev aka akc ake akk akm ako akv ama amc ame amk amm amo amv aoa aoc aoe aok aom aoo aov av- ava avc ave avk avm avo c-- caa cac cae cak cam cao cav cca ccc cce cck ccm cco ccv ce- cea cec cee cek cem ceo cev cka ckc ckm cko cma cmc cme cmk cmm cmo cmv co- coa coc coe cok com coo cov cva cvc cve cvk cvm cvo cvv eaa eac eae eak eam eao eav ec- eca ecc ece eck ecm eco ecv eea eec eee eek eem eeo eev eka ekc eke eko ekv em- ema emc eme emk emm emo emv eo- eoa eoc eoe eok eom eoo eva evc eve evm evo evv ka- kaa kac kae kak kam kao kav kca kcc kce kck kcm ke- kea kec kee kek kem keo kev kkc kke kkk kkm kkv kma kmc kme kmk kmm kmo koa koc koe kok kom koo kva kvk kvm kvo kvv m-o m-v maa mac mae mak mam mao mav mc- mca mcc mce mck mcm mco mcv mea mec mee mek mem meo mev mka mkc mke mkk mkm mko mkv mma mmc mme mmk mmm mmo mmv moa moc moe mok mom moo mov mva mvc mve mvm mvo mvv oaa oac oae oak oam oao oav oc- oca occ ock ocm oco ocv oea oec oee oem oeo oka okc oke okk oko om- oma omc ome omm omo omv oo- ooa ooc ook oom ooo oov ov- ova ovc ove ovo ovv v-a v-e vaa vac vae vak vam vao vav vca vcc vce vcm vco vea vec vee vek vem veo vka vkm vm- vma vmc vmm vmo voa voc voe vok vom voo vov vva vvc vvm vvo vvv