-ey -th a-a a-b a-c a-t aaa aab aac aae aah aat aay ab- aba abb abc abe abh abt aby ac- aca acb acc ace ach act acy aea aeb aec aee aeh aet aey aha ahb ahc ahe ahh aht ahy at- ata atb atc ate ath att ay- aya ayc aye ayh ayt baa bab bac bae bah bat bay bba bbb bbc bbe bbh bbt bby bca bcb bcc bce bch bct bcy be- bea beb bec bee beh bet bey bha bhb bhc bhe bhh bht bta btb btc bte bth btt bty by- bya byc bye byh byt c-- caa cab cac cae cah cat cay cba cbb cbc cbe cbh cbt cby cca ccb ccc cce cch cct ce- cea ceb cec cee ceh cet cey ch- cha chb chc che chh cht chy cta ctb ctc cte cth ctt cty cya cyb cyc cye cyt eaa eab eac eae eah eat eba ebb ebc ebe ebh ebt eby ec- eca ecb ecc ece ech ect eea eeb eec eee eet eey eha ehb ehc ehe ehh eht eta etb etc ete eth ett ety eya eyc eye eyt haa hab hac hae hah hat hay hba hbb hbc hbe hbh hbt hby hca hcb hcc hce hch hct hcy he- hea heb hec hee heh het hey hha hhb hhc hhe hhh hht hhy hta htb htc hte hth htt hty hy- hya hyb hyc hye hyh hyt hyy taa tab tac tae tah tat tay tba tbb tbc tbe tbh tbt tca tcb tcc tce tch tct te- tea teb tec tee teh tet tey th- tha thb thc the thh tht thy tta ttb ttc tte tth ttt tty tya tyc tye tyt yaa yab yac yae yah yat yay ybc ybe yby yca ycc yce ych ycy yea yeb yec yee yeh yet yey yha yhc yhe yht yta ytc yte yth ytt yyb yyc yye yyt yyy