a-a a-b aaa aab aah aam aao aay ab- aba abb abh abm abo aby aha ahb ahh ahm aho ahy ama amb amh amm amo amy aoa aob aoh aom aoo ay- aya ayh ayo baa bab bah bam bao bay bba bbb bbh bbm bbo bby bha bhb bhh bhm bho bma bmb bmh bmm bmo boa bob boh bom boo boy by- bya byh bym byo haa hab hah ham hao hay hba hbb hbh hbm hbo hby hha hhb hhh hhm hho hhy hma hmb hmh hmm hmo hmy hoa hob hoh hom hoo hoy hy- hya hyb hyh hym hyo hyy m-o maa mab mah mam mao may mba mbb mbh mbm mbo mha mhh mhm mho mma mmb mmh mmm mmo moa mob moh mom moo moy my- mya myb myh mym myo oaa oab oah oam oao ob- oba obb obh obm obo oby oha ohh ohm oho om- oma omb omh omm omo omy oo- ooa oob ooh oom ooo oya oyo yaa yab yah yam yao yay ybm yby yha yma ymm ymo yob yom yoo yoy yyb yyy