-ey a-a a-b aaa aab aae aak aam aao aay ab- aba abb abe abk abm abo aby aea aeb aee aek aem aeo aey aka akb ake akk akm ako ama amb ame amk amm amo amy aoa aob aoe aok aom aoo ay- aya aye ayk ayo baa bab bae bak bam bao bay bba bbb bbe bbk bbm bbo bby be- bea beb bee bek bem beo bey bka bkb bke bkk bkm bko bma bmb bme bmk bmm bmo boa bob boe bok bom boo boy by- bya bye byk bym byo eaa eab eae eak eam eao eba ebb ebe ebk ebm ebo eby eea eeb eee eek eem eeo eey eka ekb eke eko eky em- ema emb eme emk emm emo eo- eoa eob eoe eok eom eoo eya eye eym eyo ka- kaa kab kae kak kam kao kay kba kbb kbe kbk kbm kbo ke- kea keb kee kek kem keo key kkb kke kkk kkm kky kma kmb kme kmk kmm kmo koa kob koe kok kom koo koy kya kye kym kyo m-o maa mab mae mak mam mao may mba mbb mbe mbk mbm mbo mea meb mee mek mem meo mey mka mkb mke mkk mkm mko mky mma mmb mme mmk mmm mmo moa mob moe mok mom moo moy my- mya myb mye myk mym myo oaa oab oae oak oam oao ob- oba obb obe obk obm obo oby oea oeb oee oem oeo oey oka okb oke okk oko om- oma omb ome omm omo omy oo- ooa oob ook oom ooo oya oye oyo yaa yab yae yak yam yao yay ybe ybm yby yea yeb yee yek yem yeo yey yka ykk ykm yma yme ymm ymo yob yoe yok yom yoo yoy yyb yye yyy