-er -ey c-- ccc cce ccr ccs ce- cec cee cer ces cey crc cre crr crs cry csc cse csr css csy cyc cye cyr cys ec- ecc ece ecr ecs eec eee eer ees eey erc ere err ers ery es- esc ese esr ess esy eyc eye eyr eys rcc rce rcr rcs re- rec ree rer res rey rrc rrr rrs rsc rse rsr rss ry- ryc rye ryr rys ryy scc sce scr scs se- sec see ser ses sey sr- src sre srr srs sry ss- ssc sse ssr sss sy- syc sye syr sys ycc yce ycs ycy yec yee yer yes yey yrc yre yrs ysc yse ysr yss ysy yyc yye yys yyy