b-p bbb bbd bbe bbl bbp bbs bbt bdb bdd bde bdl bdp bds bdt be- beb bed bee bel bep bes bet blb bld ble bll blp bls blt bpb bpd bpe bpl bpp bps bpt bsb bsd bse bsl bsp bss bst btb btd bte btl btp bts btt dbb dbd dbe dbl dbp dbs dbt ddb ddd dde ddl ddp dds ddt de- deb ded dee del dep des det dl- dlb dld dle dll dlp dls dlt dpb dpd dpe dpl dpp dps dpt dsb dsd dse dsl dsp dss dst dtb dtd dte dtl dtp dts dtt ebb ebd ebe ebl ebp ebs ebt ed- edb edd ede edl edp eds edt eeb eed eee eel eep ees eet elb eld ele ell elp els elt ep- epb epd epe epl epp eps ept es- esb esd ese esl esp ess est etb etd ete etl etp ets ett l-p lbb lbd lbe lbl lbp lbs lbt ldb ldd lde ldl ldp lds ldt leb led lee lel lep les let llb lld lle lll llp lls llt lpb lpd lpe lpl lpp lps lpt lsb lsd lse lsl lsp lss lst ltb ltd lte ltl ltp lts ltt p-p pbb pbd pbe pbl pbp pbs pbt pdb pdd pde pdl pdp pds pdt peb ped pee pel pep pes pet plb pld ple pll plp pls plt ppb ppd ppe ppl ppp pps ppt ps- psb psd pse psl psp pss pst pt- ptb ptd pte ptl ptp pts ptt sbb sbd sbe sbl sbp sbs sbt sdb sdd sde sdl sdp sds sdt se- seb sed see sel sep ses set slb sld sle sll slp sls slt spb spd spe spl spp sps spt ss- ssb ssd sse ssl ssp sss sst stb std ste stl stp sts stt tbb tbd tbe tbl tbp tbs tbt tdb tdd tde tdl tdp tds tdt te- teb ted tee tel tep tes tet tld tle tll tlp tls tlt tpb tpd tpe tpl tpp tps tpt tsb tsd tse tsl tsp tss tst ttb ttd tte ttl ttp tts ttt