a-a a-b aaa aab aad aag aah aan aau ab- aba abb abd abg abh abn abu ad- ada adb add adg adh adn adu ag- aga agb agd agg agh agn agu aha ahb ahd ahg ahh ahn ahu an- ana anb and ang anh ann anu au- aua aub aud aug auh aun b-u baa bab bad bag bah ban bau bba bbb bbd bbg bbh bbn bbu bda bdb bdd bdg bdh bdu bga bgb bgd bgg bgh bgn bgu bha bhb bhd bhg bhh bhu bna bnb bnd bng bnn bnu bua bub bud bug buh bun buu daa dab dad dag dah dan dau dba dbb dbd dbg dbh dbn dbu dda ddb ddd ddg ddh ddn ddu dga dgd dgg dgh dgn dgu dh- dha dhb dhd dhh dhu dna dnb dnd dng dnh dnn dua dub dud dug duh dun g-d gaa gab gad gag gah gan gau gba gbd gbg gbh gbn gbu gda gdb gdd gdh gdn gdu gga ggb ggd ggg ggh ggn ggu gha ghb ghd ghg ghh ghn gna gnb gnd gnn gnu gu- gua gub gud gug gun guu haa hab had hag hah han hau hba hbb hbd hbg hbh hbn hbu hda hdb hdd hdg hdh hdn hdu hga hgb hgg hgh hgn hgu hha hhb hhd hhg hhh hhn hhu hna hnb hnd hng hnh hnn hnu hua hub hud hug huh hun huu naa nab nad nag nah nan nau nba nbb nbd nbg nbn nbu nda ndb ndd ndg ndh ndn ndu nga ngb ngd ngg ngh ngn ngu nha nhb nhd nhg nhh nhn nhu nna nnb nng nnh nnn nnu nua nub nud nug nuh nun nuu ua- uaa uab uad uag uah uan uau uba ubb ubg ubh ubn ubu uda udb udd udg udn udu uga ugb ugg ugh ugn ugu uha uhb uhd uhh uhu un- una unb und ung unh unn unu uua uug uun uuu