a-a a-b aaa aab aag aak aam aao aay ab- aba abb abg abk abm abo aby ag- aga agb agg agk agm ago agy aka akb akg akk akm ako ama amb amg amk amm amo amy aoa aob aog aok aom aoo ay- aya ayk ayo baa bab bag bak bam bao bay bba bbb bbg bbk bbm bbo bby bga bgb bgg bgk bgm bgo bka bkb bkg bkk bkm bko bma bmb bmg bmk bmm bmo boa bob bog bok bom boo boy by- bya byg byk bym byo gaa gab gag gak gam gao gay gba gbg gbk gbm gbo gby gga ggb ggg ggm ggo gka gkb gkm gko gma gmb gmg gmm gmo gmy goa gob gog gok gom goo goy gy- gya gyb gym gyo ka- kaa kab kag kak kam kao kay kba kbb kbk kbm kbo kga kgb kgm kgo kgy kkb kkk kkm kky kma kmb kmg kmk kmm kmo koa kob kog kok kom koo koy kya kym kyo m-o maa mab mag mak mam mao may mba mbb mbg mbk mbm mbo mga mgb mgk mgm mgo mgy mka mkb mkg mkk mkm mko mky mma mmb mmg mmk mmm mmo moa mob mog mok mom moo moy my- mya myb myg myk mym myo oaa oab oag oak oam oao ob- oba obb obg obk obm obo oby oga ogg ogo ogy oka okb okg okk oko om- oma omb omg omm omo omy oo- ooa oob oog ook oom ooo oya oyo yaa yab yag yak yam yao yay ybg ybm yby yga ygm ygo yka ykk ykm yma ymg ymm ymo yob yog yok yom yoo yoy yyb yyg yyy