-ol b-p bbb bbd bbl bbo bbp bbs bbt bdb bdd bdl bdo bdp bds bdt blb bld bll blo blp bls blt bob bod bol boo bop bos bot bpb bpd bpl bpo bpp bps bpt bsb bsd bsl bso bsp bss bst btb btd btl bto btp bts btt dbb dbd dbl dbo dbp dbs dbt ddb ddd ddl ddo ddp dds ddt dl- dlb dld dll dlo dlp dls dlt dob dod dol doo dop dos dot dpb dpd dpl dpo dpp dps dpt dsb dsd dsl dso dsp dss dst dtb dtd dtl dto dtp dts dtt l-p lbb lbd lbl lbo lbp lbs lbt ldb ldd ldl ldo ldp lds ldt llb lld lll llo llp lls llt lob lod lol loo lop los lot lpb lpd lpl lpo lpp lps lpt lsb lsd lsl lso lsp lss lst ltb ltd ltl lto ltp lts ltt ob- obb obd obl obo obp obs obt odb odd odl odo odp ods odt olb old oll olo olp ols olt oo- oob ood ool ooo oop oos oot op- opb opd opl opo opp ops opt os- osb osd osl oso osp oss ost ot- otb otd otl oto otp ots ott p-p pbb pbd pbl pbo pbp pbs pbt pdb pdd pdl pdo pdp pds pdt plb pld pll plo plp pls plt pob pod pol poo pop pos pot ppb ppd ppl ppo ppp pps ppt ps- psb psd psl pso psp pss pst pt- ptb ptd ptl pto ptp pts ptt sbb sbd sbl sbo sbp sbs sbt sdb sdd sdl sdo sdp sds sdt slb sld sll slo slp sls slt sob sod sol soo sop sos sot spb spd spl spo spp sps spt ss- ssb ssd ssl sso ssp sss sst stb std stl sto stp sts stt tbb tbd tbl tbo tbp tbs tbt tdb tdd tdl tdo tdp tds tdt tld tll tlo tlp tls tlt to- tob tod tol too top tos tot tpb tpd tpl tpo tpp tps tpt tsb tsd tsl tso tsp tss tst ttb ttd ttl tto ttp tts ttt