a-a a-b aaa aab aad aah aak aan aau ab- aba abb abd abh abk abn abu ad- ada adb add adh adk adn adu aha ahb ahd ahh ahk ahn ahu aka akb akd akh akk akn aku an- ana anb and anh ank ann anu au- aua aub aud auh auk aun b-u baa bab bad bah bak ban bau bba bbb bbd bbh bbk bbn bbu bda bdb bdd bdh bdk bdu bha bhb bhd bhh bhk bhu bka bkb bkk bkn bna bnb bnd bnk bnn bnu bua bub bud buh buk bun buu daa dab dad dah dak dan dau dba dbb dbd dbh dbk dbn dbu dda ddb ddd ddh ddk ddn ddu dh- dha dhb dhd dhh dhk dhu dka dkb dkk dku dna dnb dnd dnh dnk dnn dua dub dud duh duk dun haa hab had hah hak han hau hba hbb hbd hbh hbk hbn hbu hda hdb hdd hdh hdk hdn hdu hha hhb hhd hhh hhk hhn hhu hka hkb hkd hkh hkk hkn hku hna hnb hnd hnh hnk hnn hnu hua hub hud huh huk hun huu ka- kaa kab kad kah kak kan kau kba kbb kbd kbh kbk kbn kbu kda kdb kdh kdk kdu kha khh khk khn khu kkb kkh kkk kkn kku kn- kna knd knk knn knu kub kud kuh kuk kun kuu naa nab nad nah nak nan nau nba nbb nbd nbk nbn nbu nda ndb ndd ndh ndk ndn ndu nha nhb nhd nhh nhk nhn nhu nka nkk nkn nku nna nnb nnh nnk nnn nnu nua nub nud nuh nuk nun nuu ua- uaa uab uad uah uak uan uau uba ubb ubh ubk ubn ubu uda udb udd udk udn udu uha uhb uhd uhh uhu uka ukb ukk ukn uku un- una unb und unh unk unn unu uua uun uuu