a-a a-b aaa aab aad aah aan aao aau ab- aba abb abd abh abn abo abu ad- ada adb add adh adn ado adu aha ahb ahd ahh ahn aho ahu an- ana anb and anh ann ano anu aoa aob aod aoh aon aoo aou au- aua aub aud auh aun auo b-u baa bab bad bah ban bao bau bba bbb bbd bbh bbn bbo bbu bda bdb bdd bdh bdo bdu bha bhb bhd bhh bho bhu bna bnb bnd bnn bno bnu boa bob bod boh bon boo bou bua bub bud buh bun buo buu daa dab dad dah dan dao dau dba dbb dbd dbh dbn dbo dbu dda ddb ddd ddh ddn ddo ddu dh- dha dhb dhd dhh dho dhu dna dnb dnd dnh dnn dno doa dob dod doh don doo dou dua dub dud duh dun duo haa hab had hah han hao hau hba hbb hbd hbh hbn hbo hbu hda hdb hdd hdh hdn hdo hdu hha hhb hhd hhh hhn hho hhu hna hnb hnd hnh hnn hno hnu hoa hob hod hoh hon hoo hou hua hub hud huh hun huo huu naa nab nad nah nan nao nau nba nbb nbd nbn nbo nbu nda ndb ndd ndh ndn ndo ndu nha nhb nhd nhh nhn nhu nna nnb nnh nnn nno nnu no- noa nob nod noh non noo nou nua nub nud nuh nun nuo nuu oaa oab oad oah oan oao oau ob- oba obb obd obh obn obo obu oda odb odd odh odn odo odu oha ohd ohh ohn oho ohu on- ona onb ond onh onn ono onu oo- ooa oob ood ooh oon ooo ou- oua oud ouh oun ouo ua- uaa uab uad uah uan uao uau uba ubb ubh ubn ubo ubu uda udb udd udn udo udu uha uhb uhd uhh uho uhu un- una unb und unh unn uno unu uoa uob uod uon uoo uua uun uuu