-th bbb bbe bbh bbi bbo bbs bbt bbx be- beb bee beh bei beo bes bet bex bhb bhe bhh bhi bho bhs bht bhx bi- bib bie bih bii bio bis bit bix bob boe boh boi boo bos bot box bsb bse bsh bsi bso bss bst bsx btb bte bth bti bto bts btt btx bxb bxi bxo bxx ebb ebe ebh ebi ebo ebs ebt ebx eeb eee eeo ees eet eex ehb ehe ehh ehi eho ehs eht eib eie eii eio eis eit eix eo- eob eoe eoh eoi eoo eos eot es- esb ese esh esi eso ess est esx etb ete eth eti eto ets ett etx ex- exe exh exi exo exs ext exx h-i hbb hbe hbh hbi hbo hbs hbt hbx he- heb hee heh hei heo hes het hex hhb hhe hhh hhi hho hhs hht hib hie hih hii hio his hit hix hob hoe hoh hoi hoo hos hot hox hsb hse hsh hsi hss hst hsx htb hte hth hti hto hts htt htx ibb ibe ibh ibi ibo ibs ibt ibx ie- iee iei ies iet iex ihb ihe ihh ihi iho ihs iht iib iie iih iii iio iis iit iix io- iob ioe ioh ioi ioo ios iot is- isb ise ish isi iso iss ist itb ite ith iti ito its itt itx ixe ixi o-i ob- obb obe obh obi obo obs obt obx oeb oee oeh oei oeo oes oet oex ohe ohh ohi oho ohs oht oib oie oii oio ois oit oo- oob ooh ooi ooo oos oot oox os- osb ose osh osi oso oss ost osx ot- otb ote oth oti oto ots ott ox- oxb oxi oxo oxt oxx sbb sbe sbh sbi sbo sbs sbt sbx se- seb see seh sei seo ses set sex sh- shb she shh shi sho shs sht sib sie sih sii sio sis sit six sob soe soh soi soo sos sot sox ss- ssb sse ssh ssi sso sss sst ssx stb ste sth sti sto sts stt stx sxi sxs sxt t-x tbb tbe tbh tbi tbo tbs tbt te- teb tee teh tei teo tes tet tex th- thb the thh thi tho ths tht thx tib tie tih tii tio tis tit tix to- tob toe toh toi too tos tot tox tsb tse tsh tsi tso tss tst tsx ttb tte tth tti tto tts ttt ttx txe txi txs txt xbe xbx xee xes xet xex xht xie xii xio xis xit xix xoi xoo xos xot xox xsb xsi xss xst xti xts xtx xxi xxo xxx