-th a-a a-b a-c a-t aaa aab aac aag aah aat aau aay ab- aba abb abc abg abh abt abu aby ac- aca acb acc acg ach act acu acy ag- aga agb agc agg agh agt agu agy aha ahb ahc ahg ahh aht ahu ahy at- ata atb atc atg ath att atu au- aua aub auc aug auh aut ay- aya ayc ayh ayt ayu b-u baa bab bac bag bah bat bau bay bba bbb bbc bbg bbh bbt bbu bby bca bcb bcc bcg bch bct bcu bcy bga bgb bgc bgg bgh bgt bgu bha bhb bhc bhg bhh bht bhu bta btb btc btg bth btt btu bty bua bub buc bug buh but buu buy by- bya byc byg byh byt byu c-- caa cab cac cag cah cat cau cay cba cbb cbc cbg cbh cbt cbu cby cca ccb ccc ccg cch cct ccu cga cgb cgc cgg cgh cgt cgu cgy ch- cha chb chc chg chh cht chu chy cta ctb ctc ctg cth ctt ctu cty cua cub cuc cug cuh cut cuu cuy cya cyb cyc cyg cyt gaa gab gac gag gah gat gau gay gba gbc gbg gbh gbt gbu gby gca gcb gcc gcg gch gct gcu gga ggb ggc ggg ggh ggt ggu gha ghb ghc ghg ghh ght gta gtb gtc gtg gth gtt gtu gty gu- gua gub guc gug gut guu guy gy- gya gyb haa hab hac hag hah hat hau hay hba hbb hbc hbg hbh hbt hbu hby hca hcb hcc hcg hch hct hcy hga hgb hgc hgg hgh hgt hgu hgy hha hhb hhc hhg hhh hht hhu hhy hta htb htc htg hth htt hty hua hub huc hug huh hut huu huy hy- hya hyb hyc hyg hyh hyt hyy taa tab tac tag tah tat tau tay tba tbb tbc tbg tbh tbt tbu tca tcb tcc tcg tch tct tcu tga tgb tgc tgg tgh tgt tgu tgy th- tha thb thc thg thh tht thu thy tta ttb ttc ttg tth ttt ttu tty tua tub tuc tug tuh tut tuu tuy tya tyc tyg tyt ua- uaa uab uac uag uah uat uau uay uba ubb ubc ubg ubh ubt ubu uby uca ucb ucc ucg uch uct ucu uga ugb ugc ugg ugh ugt ugu uha uhb uhc uhh uht uhu uhy uta utb utc uth utt utu uty uua uuc uug uut uuu uyc uyu yaa yab yac yag yah yat yau yay ybc ybg yby yca ycc ych ycu ycy yga ygc yha yhc yht yhu yta ytc yth ytt ytu yua yug yuh yut yuu yuy yyb yyc yyg yyt yyu yyy