-th bbb bbh bbi bbs bbt bhb bhh bhi bhs bht bi- bib bih bii bis bit bsb bsh bsi bss bst btb bth bti bts btt h-i hbb hbh hbi hbs hbt hhb hhh hhi hhs hht hib hih hii his hit hsb hsh hsi hss hst htb hth hti hts htt ibb ibh ibi ibs ibt ihb ihh ihi ihs iht iib iih iii iis iit is- isb ish isi iss ist itb ith iti its itt sbb sbh sbi sbs sbt sh- shb shh shi shs sht sib sih sii sis sit ss- ssb ssh ssi sss sst stb sth sti sts stt tbb tbh tbi tbs tbt th- thb thh thi ths tht tib tih tii tis tit tsb tsh tsi tss tst ttb tth tti tts ttt