a-a a-b aaa aab aak aam aao aau aav ab- aba abb abk abm abo abu abv aka akb akk akm ako aku akv ama amb amk amm amo amu amv aoa aob aok aom aoo aou aov au- aua aub auk aum auo auv av- ava avb avk avm avo avu b-u baa bab bak bam bao bau bav bba bbb bbk bbm bbo bbu bka bkb bkk bkm bko bkv bma bmb bmk bmm bmo bmu bmv boa bob bok bom boo bou bov bua bub buk bum buo buu bva bvb bvk bvm bvo bvu bvv ka- kaa kab kak kam kao kau kav kba kbb kbk kbm kbo kbu kkb kkk kkm kku kkv kma kmb kmk kmm kmo kmu koa kob kok kom koo kou kub kuk kum kuu kva kvb kvk kvm kvo kvv m-o m-v maa mab mak mam mao mau mav mba mbb mbk mbm mbo mbu mbv mka mkb mkk mkm mko mku mkv mma mmb mmk mmm mmo mmu mmv moa mob mok mom moo mou mov mua mub muk mum muu mva mvb mvm mvo mvv oaa oab oak oam oao oau oav ob- oba obb obk obm obo obu obv oka okb okk oko oku om- oma omb omm omo omu omv oo- ooa oob ook oom ooo oov ou- oua ouk oum ouo ov- ova ovb ovo ovv ua- uaa uab uak uam uao uau uav uba ubb ubk ubo ubu ubv uka ukb ukk uku um- uma umb umm umo umu uoa uob uok uom uoo uua uum uuu uva uvb uvm uvo uvu uvv v-a vaa vab vak vam vao vau vav vba vbk vbm vbo vbv vka vkb vkm vm- vma vmm vmo vmu voa vob vok vom voo vou vov vuk vum vuv vva vvb vvm vvo vvv