c-- ccc cce ccl ccp ccs cct ce- cec cee cel cep ces cet cl- clc cle cll clp cls clt cpc cpe cpl cpp cps cpt csc cse csl csp css cst ctc cte ctl ctp cts ctt ec- ecc ece ecl ecs ect eec eee eel eep ees eet elc ele ell elp els elt ep- epc epe epl epp eps ept es- esc ese esl esp ess est etc ete etl etp ets ett l-p lcc lce lcl lcp lcs lct lec lee lel lep les let llc lle lll llp lls llt lpc lpe lpl lpp lps lpt lsc lse lsl lsp lss lst ltc lte ltl ltp lts ltt p-p pcc pce pcl pcp pcs pct pec pee pel pep pes pet plc ple pll plp pls plt ppc ppe ppl ppp pps ppt ps- psc pse psl psp pss pst pt- ptc pte ptl ptp pts ptt scc sce scl scp scs sct se- sec see sel sep ses set slc sle sll slp sls slt spc spe spl spp sps spt ss- ssc sse ssl ssp sss sst stc ste stl stp sts stt tcc tce tcl tcp tcs tct te- tec tee tel tep tes tet tlc tle tll tlp tls tlt tpc tpe tpl tpp tps tpt tsc tse tsl tsp tss tst ttc tte ttl ttp tts ttt