a-a a-b aaa aab aad aak aan aau aay ab- aba abb abd abk abn abu aby ad- ada adb add adk adn adu ady aka akb akd akk akn aku an- ana anb and ank ann anu any au- aua aub aud auk aun ay- aya ayd ayk ayn ayu b-u baa bab bad bak ban bau bay bba bbb bbd bbk bbn bbu bby bda bdb bdd bdk bdu bdy bka bkb bkk bkn bna bnb bnd bnk bnn bnu bua bub bud buk bun buu buy by- bya byd byk byn byu daa dab dad dak dan dau day dba dbb dbd dbk dbn dbu dby dda ddb ddd ddk ddn ddu ddy dka dkb dkk dku dna dnb dnd dnk dnn dny dua dub dud duk dun duy dy- dya dyb dyd dyk dyn dyu dyy ka- kaa kab kad kak kan kau kay kba kbb kbd kbk kbn kbu kda kdb kdk kdu kdy kkb kkk kkn kku kky kn- kna knd knk knn knu kub kud kuk kun kuu kuy kya kyd kyn kyu naa nab nad nak nan nau nay nba nbb nbd nbk nbn nbu nda ndb ndd ndk ndn ndu ndy nka nkk nkn nku nky nna nnb nnk nnn nnu nua nub nud nuk nun nuu nuy nya nyd nyk nyn nyu nyy ua- uaa uab uad uak uan uau uay uba ubb ubk ubn ubu uby uda udb udd udk udn udu uka ukb ukk ukn uku un- una unb und unk unn unu uny uua uun uuu uyu yaa yab yad yak yan yau yay yby yda ydn ydy yka ykk ykn yna ynd ynk ynn ynu yny yua yud yuk yun yuu yuy yyb yyu yyy