-th bbb bbh bbi bbr bbs bbt bby bhb bhh bhi bhr bhs bht bi- bib bih bii bir bis bit biy brb brh bri brr brs brt bry bsb bsh bsi bsr bss bst bsy btb bth bti btr bts btt bty by- byh byi byr bys byt h-i hbb hbh hbi hbr hbs hbt hby hhb hhh hhi hhr hhs hht hhy hib hih hii hir his hit hr- hrb hrh hri hrr hrs hrt hsb hsh hsi hsr hss hst hsy htb hth hti htr hts htt hty hy- hyb hyh hyi hyr hys hyt hyy ibb ibh ibi ibr ibs ibt iby ihb ihh ihi ihr ihs iht ihy iib iih iii iir iis iit ir- irb iri irr irs irt iry is- isb ish isi isr iss ist isy itb ith iti its itt ity iyr iys iyt iyy rbb rbh rbi rbr rbs rbt rh- rhb rhh rhi rhr rhs rht rib rih rii rir ris rit riy rrb rrh rri rrr rrs rrt rsb rsh rsi rsr rss rst rtb rti rtr rts rtt rty ry- ryr rys ryy sbb sbh sbi sbr sbs sbt sby sh- shb shh shi shr shs sht shy sib sih sii sir sis sit sr- srb srh sri srr srs srt sry ss- ssb ssh ssi ssr sss sst stb sth sti str sts stt sty sy- syb syh syi syr sys syt tbb tbh tbi tbr tbs tbt th- thb thh thi thr ths tht thy tib tih tii tir tis tit tiy trb trh tri trr trs trt try tsb tsh tsi tsr tss tst tsy ttb tth tti ttr tts ttt tty tyr tys tyt ybi ybr ybs yby yhi yhs yht yih yii yir yis yit yrs yrt ysb ysi ysr yss yst ysy yth ytr yts ytt yyb yys yyt yyy