a-a a-b aaa aab aae aag aam aav ab- aba abb abe abg abm abv aea aeb aee aeg aem aev ag- aga agb age agg agm agv ama amb ame amg amm amv av- ava avb ave avg avm baa bab bae bag bam bav bba bbb bbe bbg bbm be- bea beb bee beg bem bev bga bgb bge bgg bgm bgv bma bmb bme bmg bmm bmv bva bvb bve bvg bvm bvv eaa eab eae eag eam eav eba ebb ebe ebg ebm ebv eea eeb eee eeg eem eev ega egb ege egg egm em- ema emb eme emg emm emv eva evb eve evg evm evv gaa gab gae gag gam gav gba gbe gbg gbm gbv ge- gea geb gee geg gem gev gga ggb ggg ggm ggv gma gmb gme gmg gmm gmv gva gvb gve gvg gvm m-v maa mab mae mag mam mav mba mbb mbe mbg mbm mbv mea meb mee meg mem mev mga mgb mge mgm mgv mma mmb mme mmg mmm mmv mva mvb mve mvg mvm mvv v-a v-e vaa vab vae vag vam vav vba vbg vbm vbv vea veb vee veg vem vga vgg vgm vm- vma vmm vva vvb vvg vvm vvv