a-a a-b aaa aab aak aan aao aau aav aay ab- aba abb abk abn abo abu abv aby aka akb akk akn ako aku akv an- ana anb ank ann ano anu anv any aoa aob aok aon aoo aou aov au- aua aub auk aun auo auv av- ava avb avk avn avo avu avy ay- aya ayk ayn ayo ayu b-u baa bab bak ban bao bau bav bay bba bbb bbk bbn bbo bbu bby bka bkb bkk bkn bko bkv bna bnb bnk bnn bno bnu bnv boa bob bok bon boo bou bov boy bua bub buk bun buo buu buy bva bvb bvk bvn bvo bvu bvv by- bya byk byn byo byu ka- kaa kab kak kan kao kau kav kay kba kbb kbk kbn kbo kbu kkb kkk kkn kku kkv kky kn- kna knk knn kno knu koa kob kok kon koo kou koy kub kuk kun kuu kuy kva kvb kvk kvn kvo kvv kya kyn kyo kyu naa nab nak nan nao nau nav nay nba nbb nbk nbn nbo nbu nbv nka nkk nkn nko nku nky nna nnb nnk nnn nno nnu nnv no- noa nob nok non noo nou nov noy nua nub nuk nun nuo nuu nuv nuy nva nvb nvk nvn nvu nvv nya nyk nyn nyo nyu nyy oaa oab oak oan oao oau oav ob- oba obb obk obn obo obu obv oby oka okb okk oko oku on- ona onb onk onn ono onu ony oo- ooa oob ook oon ooo oov ou- oua ouk oun ouo ov- ova ovb ovo ovv oya oyo ua- uaa uab uak uan uao uau uav uay uba ubb ubk ubn ubo ubu ubv uby uka ukb ukk ukn uku un- una unb unk unn uno unu unv uny uoa uob uok uon uoo uua uun uuu uva uvb uvo uvu uvv uyo uyu v-a vaa vab vak van vao vau vav vay vba vbk vbo vbv vka vkb vn- vna vno vnu vnv voa vob vok von voo vou vov voy vuk vuv vva vvb vvo vvv vyn yaa yab yak yan yao yau yav yay yby yka ykk ykn yna ynk ynn ynu yny yob yok yon yoo you yoy yua yuk yun yuo yuu yuv yuy yva yvo yvy yyb yyu yyy