-er -ey c-- ccc cce ccp ccr ccs ce- cec cee cep cer ces cey cpc cpe cpp cpr cps crc cre crp crr crs cry csc cse csp csr css csy cyc cye cyp cyr cys ec- ecc ece ecr ecs eec eee eep eer ees eey ep- epc epe epp epr eps erc ere erp err ers ery es- esc ese esp esr ess esy eyc eye eyp eyr eys p-p pcc pce pcp pcr pcs pec pee pep per pes pey ppc ppe ppp ppr pps prc pre prp prr prs pry ps- psc pse psp psr pss psy py- pyc pye pyr pys rcc rce rcp rcr rcs re- rec ree rep rer res rey rpc rpe rpp rpr rps rrc rrp rrr rrs rsc rse rsp rsr rss ry- ryc rye ryr rys ryy scc sce scp scr scs se- sec see sep ser ses sey spc spe spp spr sps spy sr- src sre srp srr srs sry ss- ssc sse ssp ssr sss sy- syc sye syp syr sys ycc yce ycp ycs ycy yec yee yep yer yes yey yps yrc yre yrp yrs ysc yse ysp ysr yss ysy yyc yye yys yyy