a-a a-b aaa aab aag aan aao aau aav ab- aba abb abg abn abo abu abv ag- aga agb agg agn ago agu agv an- ana anb ang ann ano anu anv aoa aob aog aon aoo aou aov au- aua aub aug aun auo auv av- ava avb avg avn avo avu b-u baa bab bag ban bao bau bav bba bbb bbg bbn bbo bbu bga bgb bgg bgn bgo bgu bgv bna bnb bng bnn bno bnu bnv boa bob bog bon boo bou bov bua bub bug bun buo buu bva bvb bvg bvn bvo bvu bvv gaa gab gag gan gao gau gav gba gbg gbn gbo gbu gbv gga ggb ggg ggn ggo ggu ggv gna gnb gnn gno gnu gnv goa gob gog gon goo gou gov gu- gua gub gug gun guo guu guv gva gvb gvg gvn gvo gvu naa nab nag nan nao nau nav nba nbb nbg nbn nbo nbu nbv nga ngb ngg ngn ngo ngu nna nnb nng nnn nno nnu nnv no- noa nob nog non noo nou nov nua nub nug nun nuo nuu nuv nva nvb nvg nvn nvu nvv oaa oab oag oan oao oau oav ob- oba obb obg obn obo obu obv oga ogg ogn ogo on- ona onb ong onn ono onu oo- ooa oob oog oon ooo oov ou- oua oun ouo ov- ova ovb ovo ovv ua- uaa uab uag uan uao uau uav uba ubb ubg ubn ubo ubu ubv uga ugb ugg ugn ugo ugu un- una unb ung unn uno unu unv uoa uob uog uon uoo uua uug uun uuu uva uvb uvo uvu uvv v-a vaa vab vag van vao vau vav vba vbg vbo vbv vga vgg vgn vgo vgu vn- vna vng vno vnu vnv voa vob vog von voo vou vov vug vuv vva vvb vvg vvo vvv