a-a a-b aaa aab aag aah aan aav ab- aba abb abg abh abn abv ag- aga agb agg agh agn agv aha ahb ahg ahh ahn ahv an- ana anb ang anh ann anv av- ava avb avg avh avn baa bab bag bah ban bav bba bbb bbg bbh bbn bga bgb bgg bgh bgn bgv bha bhb bhg bhh bhv bna bnb bng bnn bnv bva bvb bvg bvh bvn bvv gaa gab gag gah gan gav gba gbg gbh gbn gbv gga ggb ggg ggh ggn ggv gha ghb ghg ghh ghn gna gnb gnn gnv gva gvb gvg gvh gvn haa hab hag hah han hav hba hbb hbg hbh hbn hbv hga hgb hgg hgh hgn hgv hha hhb hhg hhh hhn hhv hna hnb hng hnh hnn hnv hv- hva hvb hvg hvn hvv naa nab nag nah nan nav nba nbb nbg nbn nbv nga ngb ngg ngh ngn nha nhb nhg nhh nhn nhv nna nnb nng nnh nnn nnv nva nvb nvg nvh nvn nvv v-a vaa vab vag vah van vav vba vbg vbh vbv vga vgg vgh vgn vh- vha vhb vn- vna vng vnv vva vvb vvg vvv