a-a a-b aaa aab aag aak aan aao aay ab- aba abb abg abk abn abo aby ag- aga agb agg agk agn ago agy aka akb akg akk akn ako an- ana anb ang ank ann ano any aoa aob aog aok aon aoo ay- aya ayk ayn ayo baa bab bag bak ban bao bay bba bbb bbg bbk bbn bbo bby bga bgb bgg bgk bgn bgo bka bkb bkg bkk bkn bko bna bnb bng bnk bnn bno boa bob bog bok bon boo boy by- bya byg byk byn byo gaa gab gag gak gan gao gay gba gbg gbk gbn gbo gby gga ggb ggg ggn ggo gka gkb gkn gko gna gnb gnn gno goa gob gog gok gon goo goy gy- gya gyb gyn gyo ka- kaa kab kag kak kan kao kay kba kbb kbk kbn kbo kga kgb kgo kgy kkb kkk kkn kky kn- kna kng knk knn kno koa kob kog kok kon koo koy kya kyn kyo naa nab nag nak nan nao nay nba nbb nbg nbk nbn nbo nga ngb ngg ngk ngn ngo nka nkk nkn nko nky nna nnb nng nnk nnn nno no- noa nob nog nok non noo noy nya nyg nyk nyn nyo nyy oaa oab oag oak oan oao ob- oba obb obg obk obn obo oby oga ogg ogn ogo ogy oka okb okg okk oko on- ona onb ong onk onn ono ony oo- ooa oob oog ook oon ooo oya oyo yaa yab yag yak yan yao yay ybg yby yga ygo yka ykk ykn yna yng ynk ynn yny yob yog yok yon yoo yoy yyb yyg yyy