-ic -th bbb bbc bbh bbi bbt bby bcb bcc bch bci bct bcy bhb bhc bhh bhi bht bi- bib bic bih bii bit biy btb btc bth bti btt bty by- byc byh byi byt c-- cbb cbc cbh cbi cbt cby ccb ccc cch cci cct ch- chb chc chh chi cht chy ci- cib cic cih cii cit ctb ctc cth cti ctt cty cyb cyc cyt h-i hbb hbc hbh hbi hbt hby hcb hcc hch hci hct hcy hhb hhc hhh hhi hht hhy hib hic hih hii hit htb htc hth hti htt hty hy- hyb hyc hyh hyi hyt hyy ibb ibc ibh ibi ibt iby icb icc ich ici ict icy ihb ihc ihh ihi iht ihy iib iic iih iii iit itb itc ith iti itt ity iyc iyt iyy tbb tbc tbh tbi tbt tcb tcc tch tci tct th- thb thc thh thi tht thy tib tic tih tii tit tiy ttb ttc tth tti ttt tty tyc tyt ybc ybi yby ycc ych yci ycy yhc yhi yht yih yii yit ytc yth ytt yyb yyc yyt yyy