a-a a-b aaa aab aag aah aak aan aao aav ab- aba abb abg abh abk abn abo abv ag- aga agb agg agh agk agn ago agv aha ahb ahg ahh ahk ahn aho ahv aka akb akg akh akk akn ako akv an- ana anb ang anh ank ann ano anv aoa aob aog aoh aok aon aoo aov av- ava avb avg avh avk avn avo baa bab bag bah bak ban bao bav bba bbb bbg bbh bbk bbn bbo bga bgb bgg bgh bgk bgn bgo bgv bha bhb bhg bhh bhk bho bhv bka bkb bkg bkk bkn bko bkv bna bnb bng bnk bnn bno bnv boa bob bog boh bok bon boo bov bva bvb bvg bvh bvk bvn bvo bvv gaa gab gag gah gak gan gao gav gba gbg gbh gbk gbn gbo gbv gga ggb ggg ggh ggn ggo ggv gha ghb ghg ghh ghn gho gka gkb gkh gkn gko gna gnb gnn gno gnv goa gob gog goh gok gon goo gov gva gvb gvg gvh gvk gvn gvo haa hab hag hah hak han hao hav hba hbb hbg hbh hbk hbn hbo hbv hga hgb hgg hgh hgk hgn hgo hgv hha hhb hhg hhh hhk hhn hho hhv hka hkb hkg hkh hkk hkn hko hna hnb hng hnh hnk hnn hno hnv hoa hob hog hoh hok hon hoo hov hv- hva hvb hvg hvk hvn hvo hvv ka- kaa kab kag kah kak kan kao kav kba kbb kbh kbk kbn kbo kga kgb kgh kgo kgv kha khh khk khn kho khv kkb kkh kkk kkn kkv kn- kna kng knk knn kno koa kob kog koh kok kon koo kva kvb kvh kvk kvn kvo kvv naa nab nag nah nak nan nao nav nba nbb nbg nbk nbn nbo nbv nga ngb ngg ngh ngk ngn ngo nha nhb nhg nhh nhk nhn nhv nka nkk nkn nko nna nnb nng nnh nnk nnn nno nnv no- noa nob nog noh nok non noo nov nva nvb nvg nvh nvk nvn nvv oaa oab oag oah oak oan oao oav ob- oba obb obg obh obk obn obo obv oga ogg ogh ogn ogo oha ohg ohh ohn oho oka okb okg okk oko on- ona onb ong onh onk onn ono oo- ooa oob oog ooh ook oon ooo oov ov- ova ovb ovh ovo ovv v-a vaa vab vag vah vak van vao vav vba vbg vbh vbk vbo vbv vga vgg vgh vgn vgo vh- vha vhb vho vka vkb vkg vn- vna vng vno vnv voa vob vog voh vok von voo vov vva vvb vvg vvo vvv