c-- ccc cce ccl ccp ccs ce- cec cee cel cep ces cl- clc cle cll clp cls cpc cpe cpl cpp cps csc cse csl csp css ec- ecc ece ecl ecs eec eee eel eep ees elc ele ell elp els ep- epc epe epl epp eps es- esc ese esl esp ess l-p lcc lce lcl lcp lcs lec lee lel lep les llc lle lll llp lls lpc lpe lpl lpp lps lsc lse lsl lsp lss p-p pcc pce pcl pcp pcs pec pee pel pep pes plc ple pll plp pls ppc ppe ppl ppp pps ps- psc pse psl psp pss scc sce scl scp scs se- sec see sel sep ses slc sle sll slp sls spc spe spl spp sps ss- ssc sse ssl ssp sss