-ol b-p bbb bbl bbo bbp bbs bbt bbx blb bll blo blp bls blt blx bob bol boo bop bos bot box bpb bpl bpo bpp bps bpt bpx bsb bsl bso bsp bss bst bsx btb btl bto btp bts btt btx bxb bxl bxo bxx l-p lbb lbl lbo lbp lbs lbt lbx llb lll llo llp lls llt lob lol loo lop los lot lox lpb lpl lpo lpp lps lpt lpx lsb lsl lso lsp lss lst ltb ltl lto ltp lts ltt ltx lxo lxx ob- obb obl obo obp obs obt obx olb oll olo olp ols olt oo- oob ool ooo oop oos oot oox op- opb opl opo opp ops opt opx os- osb osl oso osp oss ost osx ot- otb otl oto otp ots ott ox- oxb oxo oxt oxx p-p pbb pbl pbo pbp pbs pbt pbx plb pll plo plp pls plt plx pob pol poo pop pos pot pox ppb ppl ppo ppp pps ppt ppx ps- psb psl pso psp pss pst psx pt- ptb ptl pto ptp pts ptt ptx pxl pxs pxt sbb sbl sbo sbp sbs sbt sbx slb sll slo slp sls slt slx sob sol soo sop sos sot sox spb spl spo spp sps spt spx ss- ssb ssl sso ssp sss sst ssx stb stl sto stp sts stt stx sxl sxs sxt t-x tbb tbl tbo tbp tbs tbt tll tlo tlp tls tlt tlx to- tob tol too top tos tot tox tpb tpl tpo tpp tps tpt tpx tsb tsl tso tsp tss tst tsx ttb ttl tto ttp tts ttt ttx txl txs txt xbl xbx xlb xls xlt xoo xop xos xot xox xpb xpl xpo xpp xps xpt xsb xsl xsp xss xst xtp xts xtx xxl xxo xxp xxx