-ey a-a a-b aaa aab aae aam aao aay ab- aba abb abe abm abo aby aea aeb aee aem aeo aey ama amb ame amm amo amy aoa aob aoe aom aoo ay- aya aye ayo baa bab bae bam bao bay bba bbb bbe bbm bbo bby be- bea beb bee bem beo bey bma bmb bme bmm bmo boa bob boe bom boo boy by- bya bye bym byo eaa eab eae eam eao eba ebb ebe ebm ebo eby eea eeb eee eem eeo eey em- ema emb eme emm emo eo- eoa eob eoe eom eoo eya eye eym eyo m-o maa mab mae mam mao may mba mbb mbe mbm mbo mea meb mee mem meo mey mma mmb mme mmm mmo moa mob moe mom moo moy my- mya myb mye mym myo oaa oab oae oam oao ob- oba obb obe obm obo oby oea oeb oee oem oeo oey om- oma omb ome omm omo omy oo- ooa oob oom ooo oya oye oyo yaa yab yae yam yao yay ybe ybm yby yea yeb yee yem yeo yey yma yme ymm ymo yob yoe yom yoo yoy yyb yye yyy