a-a a-b aaa aab aad aah aan aau ab- aba abb abd abh abn abu ad- ada adb add adh adn adu aha ahb ahd ahh ahn ahu an- ana anb and anh ann anu au- aua aub aud auh aun b-u baa bab bad bah ban bau bba bbb bbd bbh bbn bbu bda bdb bdd bdh bdu bha bhb bhd bhh bhu bna bnb bnd bnn bnu bua bub bud buh bun buu daa dab dad dah dan dau dba dbb dbd dbh dbn dbu dda ddb ddd ddh ddn ddu dh- dha dhb dhd dhh dhu dna dnb dnd dnh dnn dua dub dud duh dun haa hab had hah han hau hba hbb hbd hbh hbn hbu hda hdb hdd hdh hdn hdu hha hhb hhd hhh hhn hhu hna hnb hnd hnh hnn hnu hua hub hud huh hun huu naa nab nad nah nan nau nba nbb nbd nbn nbu nda ndb ndd ndh ndn ndu nha nhb nhd nhh nhn nhu nna nnb nnh nnn nnu nua nub nud nuh nun nuu ua- uaa uab uad uah uan uau uba ubb ubh ubn ubu uda udb udd udn udu uha uhb uhd uhh uhu un- una unb und unh unn unu uua uun uuu