a-a a-b a-i aaa aab aai aak aam aao aay ab- aba abb abi abk abm abo aby ai- aia aib aii aik aim aio aiy aka akb aki akk akm ako ama amb ami amk amm amo amy aoa aob aoi aok aom aoo ay- aya ayi ayk ayo baa bab bai bak bam bao bay bba bbb bbi bbk bbm bbo bby bi- bia bib bii bik bim bio biy bka bkb bkk bkm bko bma bmb bmi bmk bmm bmo boa bob boi bok bom boo boy by- bya byi byk bym byo ia- iaa iab iai iam iao iba ibb ibi ibk ibm ibo iby iia iib iii iim iio ika ikb iki ikk iko im- ima imb imi imm imo imy io- ioa iob ioi iom ioo iya iym iyo iyy ka- kaa kab kai kak kam kao kay kba kbb kbi kbk kbm kbo kia kib kii kik kim kio kkb kki kkk kkm kky kma kmb kmi kmk kmm kmo koa kob koi kok kom koo koy kya kym kyo m-o maa mab mai mak mam mao may mba mbb mbi mbk mbm mbo mi- mia mib mii mik mim mio miy mka mkb mkk mkm mko mky mma mmb mmi mmk mmm mmo moa mob moi mok mom moo moy my- mya myb myk mym myo o-i oaa oab oai oak oam oao ob- oba obb obi obk obm obo oby oia oib oii oik oim oio oka okb oki okk oko om- oma omb omi omm omo omy oo- ooa oob ooi ook oom ooo oya oyi oyo yaa yab yai yak yam yao yay ybi ybm yby yii yim yio yka yki ykk ykm yma ymi ymm ymo yob yoi yok yom yoo yoy yyb yyy