a-a a-b aaa aab aam aau aay ab- aba abb abm abu aby ama amb amm amu amy au- aua aub aum ay- aya ayu b-u baa bab bam bau bay bba bbb bbm bbu bby bma bmb bmm bmu bua bub bum buu buy by- bya bym byu maa mab mam mau may mba mbb mbm mbu mma mmb mmm mmu mua mub mum muu muy my- mya myb mym myu ua- uaa uab uam uau uay uba ubb ubu uby um- uma umb umm umu uua uum uuu uyu yaa yab yam yau yay ybm yby yma ymm yua yum yuu yuy yyb yyu yyy