-th bbb bbh bbi bbr bbt bby bhb bhh bhi bhr bht bi- bib bih bii bir bit biy brb brh bri brr brt bry btb bth bti btr btt bty by- byh byi byr byt h-i hbb hbh hbi hbr hbt hby hhb hhh hhi hhr hht hhy hib hih hii hir hit hr- hrb hrh hri hrr hrt htb hth hti htr htt hty hy- hyb hyh hyi hyr hyt hyy ibb ibh ibi ibr ibt iby ihb ihh ihi ihr iht ihy iib iih iii iir iit ir- irb iri irr irt iry itb ith iti itt ity iyr iyt iyy rbb rbh rbi rbr rbt rh- rhb rhh rhi rhr rht rib rih rii rir rit riy rrb rrh rri rrr rrt rtb rti rtr rtt rty ry- ryr ryy tbb tbh tbi tbr tbt th- thb thh thi thr tht thy tib tih tii tir tit tiy trb trh tri trr trt try ttb tth tti ttr ttt tty tyr tyt ybi ybr yby yhi yht yih yii yir yit yrt yth ytr ytt yyb yyt yyy