-er c-- c-j ccc cce ccj ccp ccr ccs ce- cec cee cej cep cer ces cjc cjp cjr cjs cpc cpe cpj cpp cpr cps crc cre crj crp crr crs csc cse csj csp csr css ec- ecc ece ecj ecr ecs eec eee eep eer ees ejc ejp ep- epc epe epp epr eps erc ere erp err ers es- esc ese esp esr ess jcc jce jcp jcr jcs jec jee jej jep jer jes jjc jjj jjp jjr jjs jpc jpe jpj jpp jpr jps jrc jrp jrr jrs jsc jse jsj jsp jsr jss p-p pcc pce pcj pcp pcr pcs pec pee pep per pes pjc pjp pjs ppc ppe ppj ppp ppr pps prc pre prp prr prs ps- psc pse psj psp psr pss rcc rce rcj rcp rcr rcs re- rec ree rep rer res rjc rjp rjr rpc rpe rpp rpr rps rrc rrp rrr rrs rsc rse rsj rsp rsr rss scc sce scj scp scr scs se- sec see sej sep ser ses sjc sje sjj sjp sjr sjs spc spe spp spr sps sr- src sre srj srp srr srs ss- ssc sse ssj ssp ssr sss