a-a a-b a-i aaa aab aae aai aam aao aav ab- aba abb abe abi abm abo abv aea aeb aee aei aem aeo aev ai- aia aib aie aii aim aio aiv ama amb ame ami amm amo amv aoa aob aoe aoi aom aoo aov av- ava avb ave avi avm avo baa bab bae bai bam bao bav bba bbb bbe bbi bbm bbo be- bea beb bee bei bem beo bev bi- bia bib bie bii bim bio biv bma bmb bme bmi bmm bmo bmv boa bob boe boi bom boo bov bva bvb bve bvi bvm bvo bvv eaa eab eae eai eam eao eav eba ebb ebe ebi ebm ebo ebv eea eeb eee eem eeo eev eia eib eie eii eim eio eiv em- ema emb eme emi emm emo emv eo- eoa eob eoe eoi eom eoo eva evb eve evi evm evo evv i-v ia- iaa iab iae iai iam iao iav iba ibb ibe ibi ibm ibo ibv ie- iea iee iei iem iev iia iib iie iii iim iio im- ima imb ime imi imm imo imv io- ioa iob ioe ioi iom ioo iov iva ivb ive ivi ivo ivv m-o m-v maa mab mae mai mam mao mav mba mbb mbe mbi mbm mbo mbv mea meb mee mei mem meo mev mi- mia mib mie mii mim mio miv mma mmb mme mmi mmm mmo mmv moa mob moe moi mom moo mov mva mvb mve mvi mvm mvo mvv o-i oaa oab oae oai oam oao oav ob- oba obb obe obi obm obo obv oea oeb oee oei oem oeo oia oib oie oii oim oio oiv om- oma omb ome omi omm omo omv oo- ooa oob ooi oom ooo oov ov- ova ovb ove ovi ovo ovv v-a v-e vaa vab vae vai vam vao vav vba vbi vbm vbo vbv vea veb vee vei vem veo vi- via vib vie vii vim vio viv vm- vma vmi vmm vmo voa vob voe voi vom voo vov vva vvb vvi vvm vvo vvv