a-a a-b a-c aaa aab aac aae aah aam aao aav ab- aba abb abc abe abh abm abo abv ac- aca acb acc ace ach acm aco acv aea aeb aec aee aeh aem aeo aev aha ahb ahc ahe ahh ahm aho ahv ama amb amc ame amh amm amo amv aoa aob aoc aoe aoh aom aoo aov av- ava avb avc ave avh avm avo baa bab bac bae bah bam bao bav bba bbb bbc bbe bbh bbm bbo bca bcb bcc bce bch bcm bco bcv be- bea beb bec bee beh bem beo bev bha bhb bhc bhe bhh bhm bho bhv bma bmb bmc bme bmh bmm bmo bmv boa bob boc boe boh bom boo bov bva bvb bvc bve bvh bvm bvo bvv c-- caa cab cac cae cah cam cao cav cba cbb cbc cbe cbh cbm cbo cbv cca ccb ccc cce cch ccm cco ccv ce- cea ceb cec cee ceh cem ceo cev ch- cha chb chc che chh chm cho chv cma cmb cmc cme cmh cmm cmo cmv co- coa cob coc coe coh com coo cov cva cvb cvc cve cvh cvm cvo cvv eaa eab eac eae eah eam eao eav eba ebb ebc ebe ebh ebm ebo ebv ec- eca ecb ecc ece ech ecm eco ecv eea eeb eec eee eem eeo eev eha ehb ehc ehe ehh ehm eho ehv em- ema emb emc eme emh emm emo emv eo- eoa eob eoc eoe eoh eom eoo eva evb evc eve evh evm evo evv haa hab hac hae hah ham hao hav hba hbb hbc hbe hbh hbm hbo hbv hca hcb hcc hce hch hcm hco hcv he- hea heb hec hee heh hem heo hev hha hhb hhc hhe hhh hhm hho hhv hma hmb hmc hme hmh hmm hmo hmv hoa hob hoc hoe hoh hom hoo hov hv- hva hvb hvc hvm hvo hvv m-o m-v maa mab mac mae mah mam mao mav mba mbb mbc mbe mbh mbm mbo mbv mc- mca mcb mcc mce mch mcm mco mcv mea meb mec mee meh mem meo mev mha mhc mhh mhm mho mhv mma mmb mmc mme mmh mmm mmo mmv moa mob moc moe moh mom moo mov mva mvb mvc mve mvm mvo mvv oaa oab oac oae oah oam oao oav ob- oba obb obc obe obh obm obo obv oc- oca ocb occ och ocm oco ocv oea oeb oec oee oeh oem oeo oha ohc ohe ohh ohm oho om- oma omb omc ome omh omm omo omv oo- ooa oob ooc ooh oom ooo oov ov- ova ovb ovc ove ovh ovo ovv v-a v-e vaa vab vac vae vah vam vao vav vba vbc vbh vbm vbo vbv vca vcc vce vch vcm vco vea veb vec vee veh vem veo vh- vha vhb vhc vhe vho vm- vma vmc vmm vmo voa vob voc voe voh vom voo vov vva vvb vvc vvm vvo vvv