-ol b-p bbb bbc bbe bbl bbo bbp bbs bbt bcb bcc bce bcl bco bcp bcs bct be- beb bec bee bel beo bep bes bet blb blc ble bll blo blp bls blt bob boc boe bol boo bop bos bot bpb bpc bpe bpl bpo bpp bps bpt bsb bsc bse bsl bso bsp bss bst btb btc bte btl bto btp bts btt c-- cbb cbc cbe cbl cbo cbp cbs cbt ccb ccc cce ccl cco ccp ccs cct ce- ceb cec cee cel ceo cep ces cet cl- clb clc cle cll clo clp cls clt co- cob coc coe col coo cop cos cot cpb cpc cpe cpl cpo cpp cps cpt csb csc cse csl cso csp css cst ctb ctc cte ctl cto ctp cts ctt ebb ebc ebe ebl ebo ebp ebs ebt ec- ecb ecc ece ecl eco ecs ect eeb eec eee eel eeo eep ees eet elb elc ele ell elo elp els elt eo- eob eoc eoe eol eoo eop eos eot ep- epb epc epe epl epo epp eps ept es- esb esc ese esl eso esp ess est etb etc ete etl eto etp ets ett l-p lbb lbc lbe lbl lbo lbp lbs lbt lcb lcc lce lcl lco lcp lcs lct leb lec lee lel leo lep les let llb llc lle lll llo llp lls llt lob loc loe lol loo lop los lot lpb lpc lpe lpl lpo lpp lps lpt lsb lsc lse lsl lso lsp lss lst ltb ltc lte ltl lto ltp lts ltt ob- obb obc obe obl obo obp obs obt oc- ocb occ ocl oco ocp ocs oct oeb oec oee oel oeo oep oes oet olb olc ole oll olo olp ols olt oo- oob ooc ool ooo oop oos oot op- opb opc ope opl opo opp ops opt os- osb osc ose osl oso osp oss ost ot- otb otc ote otl oto otp ots ott p-p pbb pbc pbe pbl pbo pbp pbs pbt pcb pcc pce pcl pco pcp pcs pct peb pec pee pel peo pep pes pet plb plc ple pll plo plp pls plt pob poc poe pol poo pop pos pot ppb ppc ppe ppl ppo ppp pps ppt ps- psb psc pse psl pso psp pss pst pt- ptb ptc pte ptl pto ptp pts ptt sbb sbc sbe sbl sbo sbp sbs sbt scb scc sce scl sco scp scs sct se- seb sec see sel seo sep ses set slb slc sle sll slo slp sls slt sob soc soe sol soo sop sos sot spb spc spe spl spo spp sps spt ss- ssb ssc sse ssl sso ssp sss sst stb stc ste stl sto stp sts stt tbb tbc tbe tbl tbo tbp tbs tbt tcb tcc tce tcl tco tcp tcs tct te- teb tec tee tel teo tep tes tet tlc tle tll tlo tlp tls tlt to- tob toc toe tol too top tos tot tpb tpc tpe tpl tpo tpp tps tpt tsb tsc tse tsl tso tsp tss tst ttb ttc tte ttl tto ttp tts ttt