a-a a-b aaa aab aah aau aay ab- aba abb abh abu aby aha ahb ahh ahu ahy au- aua aub auh ay- aya ayh ayu b-u baa bab bah bau bay bba bbb bbh bbu bby bha bhb bhh bhu bua bub buh buu buy by- bya byh byu haa hab hah hau hay hba hbb hbh hbu hby hha hhb hhh hhu hhy hua hub huh huu huy hy- hya hyb hyh hyy ua- uaa uab uah uau uay uba ubb ubh ubu uby uha uhb uhh uhu uhy uua uuu uyu yaa yab yah yau yay yby yha yhu yua yuh yuu yuy yyb yyu yyy