-th bbb bbe bbh bbo bbs bbt bbx be- beb bee beh beo bes bet bex bhb bhe bhh bho bhs bht bhx bob boe boh boo bos bot box bsb bse bsh bso bss bst bsx btb bte bth bto bts btt btx bxb bxo bxx ebb ebe ebh ebo ebs ebt ebx eeb eee eeo ees eet eex ehb ehe ehh eho ehs eht eo- eob eoe eoh eoo eos eot es- esb ese esh eso ess est esx etb ete eth eto ets ett etx ex- exe exh exo exs ext exx hbb hbe hbh hbo hbs hbt hbx he- heb hee heh heo hes het hex hhb hhe hhh hho hhs hht hob hoe hoh hoo hos hot hox hsb hse hsh hss hst hsx htb hte hth hto hts htt htx ob- obb obe obh obo obs obt obx oeb oee oeh oeo oes oet oex ohe ohh oho ohs oht oo- oob ooh ooo oos oot oox os- osb ose osh oso oss ost osx ot- otb ote oth oto ots ott ox- oxb oxo oxt oxx sbb sbe sbh sbo sbs sbt sbx se- seb see seh seo ses set sex sh- shb she shh sho shs sht sob soe soh soo sos sot sox ss- ssb sse ssh sso sss sst ssx stb ste sth sto sts stt stx sxs sxt t-x tbb tbe tbh tbo tbs tbt te- teb tee teh teo tes tet tex th- thb the thh tho ths tht thx to- tob toe toh too tos tot tox tsb tse tsh tso tss tst tsx ttb tte tth tto tts ttt ttx txe txs txt xbe xbx xee xes xet xex xht xoo xos xot xox xsb xss xst xts xtx xxo xxx