a-a a-b aaa aab aae aag aak aao aau aav ab- aba abb abe abg abk abo abu abv aea aeb aee aeg aek aeo aeu aev ag- aga agb age agg agk ago agu agv aka akb ake akg akk ako aku akv aoa aob aoe aog aok aoo aou aov au- aua aub aue aug auk auo auv av- ava avb ave avg avk avo avu b-u baa bab bae bag bak bao bau bav bba bbb bbe bbg bbk bbo bbu be- bea beb bee beg bek beo beu bev bga bgb bge bgg bgk bgo bgu bgv bka bkb bke bkg bkk bko bkv boa bob boe bog bok boo bou bov bua bub bue bug buk buo buu bva bvb bve bvg bvk bvo bvu bvv eaa eab eae eag eak eao eau eav eba ebb ebe ebg ebk ebo ebu ebv eea eeb eee eeg eek eeo eev ega egb ege egg ego egu eka ekb eke ekg eko eku ekv eo- eoa eob eoe eog eok eoo eou eu- eua eub eue eug euv eva evb eve evg evo evv gaa gab gae gag gak gao gau gav gba gbe gbg gbk gbo gbu gbv ge- gea geb gee geg gek geo geu gev gga ggb ggg ggo ggu ggv gka gkb gko goa gob goe gog gok goo gou gov gu- gua gub gue gug guk guo guu guv gva gvb gve gvg gvk gvo gvu ka- kaa kab kae kag kak kao kau kav kba kbb kbe kbk kbo kbu ke- kea keb kee keg kek keo kev kga kgb kgo kgu kgv kkb kke kkk kku kkv koa kob koe kog kok koo kou kub kue kug kuk kuu kva kvb kvk kvo kvv oaa oab oae oag oak oao oau oav ob- oba obb obe obg obk obo obu obv oea oeb oee oeg oeo oga oge ogg ogo oka okb oke okg okk oko oku oo- ooa oob oog ook ooo oov ou- oua oue ouk ouo ov- ova ovb ove ovo ovv ua- uaa uab uae uag uak uao uau uav uba ubb ube ubg ubk ubo ubu ubv uea ueb uee ueg uga ugb uge ugg ugk ugo ugu uka ukb uke ukk uku uoa uob uoe uog uok uoo uua uue uug uuu uva uvb uve uvo uvu uvv v-a v-e vaa vab vae vag vak vao vau vav vba vbg vbk vbo vbv vea veb vee veg vek veo veu vga vgg vgo vgu vka vkb vkg voa vob voe vog vok voo vou vov vue vug vuk vuv vva vvb vvg vvo vvv