-th a-a a-b a-c a-t aaa aab aac aag aah aan aao aat ab- aba abb abc abg abh abn abo abt ac- aca acb acc acg ach acn aco act ag- aga agb agc agg agh agn ago agt aha ahb ahc ahg ahh ahn aho aht an- ana anb anc ang anh ann ano ant aoa aob aoc aog aoh aon aoo aot at- ata atb atc atg ath atn ato att baa bab bac bag bah ban bao bat bba bbb bbc bbg bbh bbn bbo bbt bca bcb bcc bcg bch bcn bco bct bga bgb bgc bgg bgh bgn bgo bgt bha bhb bhc bhg bhh bho bht bna bnb bnc bng bnn bno bnt boa bob boc bog boh bon boo bot bta btb btc btg bth btn bto btt c-- caa cab cac cag cah can cao cat cba cbb cbc cbg cbh cbn cbo cbt cca ccb ccc ccg cch ccn cco cct cga cgb cgc cgg cgh cgn cgo cgt ch- cha chb chc chg chh chn cho cht cn- cna cnb cnc cng cnh cnn cno cnt co- coa cob coc cog coh con coo cot cta ctb ctc ctg cth ctn cto ctt gaa gab gac gag gah gan gao gat gba gbc gbg gbh gbn gbo gbt gca gcb gcc gcg gch gcn gco gct gga ggb ggc ggg ggh ggn ggo ggt gha ghb ghc ghg ghh ghn gho ght gna gnb gnc gnn gno gnt goa gob goc gog goh gon goo got gta gtb gtc gtg gth gtn gto gtt haa hab hac hag hah han hao hat hba hbb hbc hbg hbh hbn hbo hbt hca hcb hcc hcg hch hcn hco hct hga hgb hgc hgg hgh hgn hgo hgt hha hhb hhc hhg hhh hhn hho hht hna hnb hnc hng hnh hnn hno hnt hoa hob hoc hog hoh hon hoo hot hta htb htc htg hth htn hto htt naa nab nac nag nah nan nao nat nba nbb nbc nbg nbn nbo nbt nca ncb ncc ncg nch ncn nco nct nga ngb ngc ngg ngh ngn ngo ngt nha nhb nhc nhg nhh nhn nht nna nnb nnc nng nnh nnn nno nnt no- noa nob noc nog noh non noo not nta ntb ntc ntg nth ntn nto ntt oaa oab oac oag oah oan oao oat ob- oba obb obc obg obh obn obo obt oc- oca ocb occ ocg och ocn oco oct oga ogc ogg ogh ogn ogo ogt oha ohc ohg ohh ohn oho oht on- ona onb onc ong onh onn ono ont oo- ooa oob ooc oog ooh oon ooo oot ot- ota otb otc otg oth otn oto ott taa tab tac tag tah tan tao tat tba tbb tbc tbg tbh tbn tbo tbt tca tcb tcc tcg tch tcn tco tct tga tgb tgc tgg tgh tgn tgo tgt th- tha thb thc thg thh thn tho tht tna tnb tnc tng tnh tnn tno tnt to- toa tob toc tog toh ton too tot tta ttb ttc ttg tth ttn tto ttt