a-a a-b aaa aab aag aah aan aav aay ab- aba abb abg abh abn abv aby ag- aga agb agg agh agn agv agy aha ahb ahg ahh ahn ahv ahy an- ana anb ang anh ann anv any av- ava avb avg avh avn avy ay- aya ayh ayn baa bab bag bah ban bav bay bba bbb bbg bbh bbn bby bga bgb bgg bgh bgn bgv bha bhb bhg bhh bhv bna bnb bng bnn bnv bva bvb bvg bvh bvn bvv by- bya byg byh byn gaa gab gag gah gan gav gay gba gbg gbh gbn gbv gby gga ggb ggg ggh ggn ggv gha ghb ghg ghh ghn gna gnb gnn gnv gva gvb gvg gvh gvn gy- gya gyb gyn haa hab hag hah han hav hay hba hbb hbg hbh hbn hbv hby hga hgb hgg hgh hgn hgv hgy hha hhb hhg hhh hhn hhv hhy hna hnb hng hnh hnn hnv hny hv- hva hvb hvg hvn hvv hvy hy- hya hyb hyg hyh hyn hyv hyy naa nab nag nah nan nav nay nba nbb nbg nbn nbv nga ngb ngg ngh ngn nha nhb nhg nhh nhn nhv nhy nna nnb nng nnh nnn nnv nva nvb nvg nvh nvn nvv nya nyg nyn nyy v-a vaa vab vag vah van vav vay vba vbg vbh vbv vga vgg vgh vgn vh- vha vhb vn- vna vng vnv vva vvb vvg vvv vyg vyn yaa yab yag yah yan yav yay ybg yby yga yha yna yng ynn yny yva yvy yyb yyg yyy