-th bbb bbe bbh bbi bbs bbt bbx be- beb bee beh bei bes bet bex bhb bhe bhh bhi bhs bht bhx bi- bib bie bih bii bis bit bix bsb bse bsh bsi bss bst bsx btb bte bth bti bts btt btx bxb bxi bxx ebb ebe ebh ebi ebs ebt ebx eeb eee ees eet eex ehb ehe ehh ehi ehs eht eib eie eii eis eit eix es- esb ese esh esi ess est esx etb ete eth eti ets ett etx ex- exe exh exi exs ext exx h-i hbb hbe hbh hbi hbs hbt hbx he- heb hee heh hei hes het hex hhb hhe hhh hhi hhs hht hib hie hih hii his hit hix hsb hse hsh hsi hss hst hsx htb hte hth hti hts htt htx ibb ibe ibh ibi ibs ibt ibx ie- iee iei ies iet iex ihb ihe ihh ihi ihs iht iib iie iih iii iis iit iix is- isb ise ish isi iss ist itb ite ith iti its itt itx ixe ixi sbb sbe sbh sbi sbs sbt sbx se- seb see seh sei ses set sex sh- shb she shh shi shs sht sib sie sih sii sis sit six ss- ssb sse ssh ssi sss sst ssx stb ste sth sti sts stt stx sxi sxs sxt t-x tbb tbe tbh tbi tbs tbt te- teb tee teh tei tes tet tex th- thb the thh thi ths tht thx tib tie tih tii tis tit tix tsb tse tsh tsi tss tst tsx ttb tte tth tti tts ttt ttx txe txi txs txt xbe xbx xee xes xet xex xht xie xii xis xit xix xsb xsi xss xst xti xts xtx xxi xxx