a-a a-b aaa aab aad aah aau aay ab- aba abb abd abh abu aby ad- ada adb add adh adu ady aha ahb ahd ahh ahu ahy au- aua aub aud auh ay- aya ayd ayh ayu b-u baa bab bad bah bau bay bba bbb bbd bbh bbu bby bda bdb bdd bdh bdu bdy bha bhb bhd bhh bhu bua bub bud buh buu buy by- bya byd byh byu daa dab dad dah dau day dba dbb dbd dbh dbu dby dda ddb ddd ddh ddu ddy dh- dha dhb dhd dhh dhu dua dub dud duh duy dy- dya dyb dyd dyu dyy haa hab had hah hau hay hba hbb hbd hbh hbu hby hda hdb hdd hdh hdu hdy hha hhb hhd hhh hhu hhy hua hub hud huh huu huy hy- hya hyb hyd hyh hyy ua- uaa uab uad uah uau uay uba ubb ubh ubu uby uda udb udd udu uha uhb uhd uhh uhu uhy uua uuu uyu yaa yab yad yah yau yay yby yda ydy yha yhu yua yud yuh yuu yuy yyb yyu yyy