a-a a-b a-t aaa aab aam aao aat aav ab- aba abb abm abo abt abv ama amb amm amo amt amv aoa aob aom aoo aot aov at- ata atb atm ato att atv av- ava avb avm avo avt baa bab bam bao bat bav bba bbb bbm bbo bbt bma bmb bmm bmo bmt bmv boa bob bom boo bot bov bta btb btm bto btt btv bva bvb bvm bvo bvt bvv m-o m-v maa mab mam mao mat mav mba mbb mbm mbo mbt mbv mma mmb mmm mmo mmt mmv moa mob mom moo mot mov mta mtb mtm mto mtt mtv mva mvb mvm mvo mvt mvv oaa oab oam oao oat oav ob- oba obb obm obo obt obv om- oma omb omm omo omt omv oo- ooa oob oom ooo oot oov ot- ota otb otm oto ott otv ov- ova ovb ovo ovv taa tab tam tao tat tav tba tbb tbm tbo tbt tbv tma tmb tmm tmo tmt tmv to- toa tob tom too tot tov tta ttb ttm tto ttt ttv tva tvb tvm tvo tvt v-a vaa vab vam vao vat vav vba vbm vbo vbv vm- vma vmm vmo vmt voa vob vom voo vot vov vta vtb vtm vto vtt vtv vva vvb vvm vvo vvt vvv