b-p bbb bbd bbe bbo bbp bbs bbt bbx bdb bdd bde bdo bdp bds bdt bdx be- beb bed bee beo bep bes bet bex bob bod boe boo bop bos bot box bpb bpd bpe bpo bpp bps bpt bpx bsb bsd bse bso bsp bss bst bsx btb btd bte bto btp bts btt btx bxb bxd bxo bxx dbb dbd dbe dbo dbp dbs dbt dbx ddb ddd dde ddo ddp dds ddt ddx de- deb ded dee deo dep des det dex dob dod doe doo dop dos dot dox dpb dpd dpe dpo dpp dps dpt dsb dsd dse dso dsp dss dst dsx dtb dtd dte dto dtp dts dtt dtx dxd dxo dxp dxs dxt dxx ebb ebd ebe ebo ebp ebs ebt ebx ed- edb edd ede edo edp eds edt edx eeb eed eee eeo eep ees eet eex eo- eob eod eoe eoo eop eos eot ep- epb epd epe epo epp eps ept epx es- esb esd ese eso esp ess est esx etb etd ete eto etp ets ett etx ex- exd exe exo exp exs ext exx ob- obb obd obe obo obp obs obt obx odb odd ode odo odp ods odt oeb oed oee oeo oep oes oet oex oo- oob ood ooo oop oos oot oox op- opb opd ope opo opp ops opt opx os- osb osd ose oso osp oss ost osx ot- otb otd ote oto otp ots ott ox- oxb oxo oxt oxx p-p pbb pbd pbe pbo pbp pbs pbt pbx pdb pdd pde pdo pdp pds pdt pdx peb ped pee peo pep pes pet pex pob pod poe poo pop pos pot pox ppb ppd ppe ppo ppp pps ppt ppx ps- psb psd pse pso psp pss pst psx pt- ptb ptd pte pto ptp pts ptt ptx pxe pxs pxt sbb sbd sbe sbo sbp sbs sbt sbx sdb sdd sde sdo sdp sds sdt se- seb sed see seo sep ses set sex sob sod soe soo sop sos sot sox spb spd spe spo spp sps spt spx ss- ssb ssd sse sso ssp sss sst ssx stb std ste sto stp sts stt stx sxs sxt t-x tbb tbd tbe tbo tbp tbs tbt tdb tdd tde tdo tdp tds tdt tdx te- teb ted tee teo tep tes tet tex to- tob tod toe too top tos tot tox tpb tpd tpe tpo tpp tps tpt tpx tsb tsd tse tso tsp tss tst tsx ttb ttd tte tto ttp tts ttt ttx txe txs txt xbe xbx xdb xde xds xdt xed xee xep xes xet xex xod xoo xop xos xot xox xpb xpd xpe xpo xpp xps xpt xsb xsp xss xst xtp xts xtx xxo xxp xxx