c-- ccc cce ccl ccp ccs cct ccx ce- cec cee cel cep ces cet cex cl- clc cle cll clp cls clt clx cpc cpe cpl cpp cps cpt cpx csc cse csl csp css cst csx ctc cte ctl ctp cts ctt ctx cxc cxl cxp cxs cxt cxx ec- ecc ece ecl ecs ect ecx eec eee eel eep ees eet eex elc ele ell elp els elt elx ep- epc epe epl epp eps ept epx es- esc ese esl esp ess est esx etc ete etl etp ets ett etx ex- exc exe exl exp exs ext exx l-p lcc lce lcl lcp lcs lct lcx lec lee lel lep les let lex llc lle lll llp lls llt lpc lpe lpl lpp lps lpt lpx lsc lse lsl lsp lss lst ltc lte ltl ltp lts ltt ltx lxc lxx p-p pcc pce pcl pcp pcs pct pcx pec pee pel pep pes pet pex plc ple pll plp pls plt plx ppc ppe ppl ppp pps ppt ppx ps- psc pse psl psp pss pst psx pt- ptc pte ptl ptp pts ptt ptx pxc pxe pxl pxs pxt scc sce scl scp scs sct scx se- sec see sel sep ses set sex slc sle sll slp sls slt slx spc spe spl spp sps spt spx ss- ssc sse ssl ssp sss sst ssx stc ste stl stp sts stt stx sxc sxl sxs sxt t-x tcc tce tcl tcp tcs tct tcx te- tec tee tel tep tes tet tex tlc tle tll tlp tls tlt tlx tpc tpe tpl tpp tps tpt tpx tsc tse tsl tsp tss tst tsx ttc tte ttl ttp tts ttt ttx txe txl txs txt xcl xcp xcx xee xel xep xes xet xex xls xlt xpc xpe xpl xpp xps xpt xsc xsl xsp xss xst xtc xtp xts xtx xxl xxp xxx