-er -ey -ic c-- ccc cce cci ccr ce- cec cee cei cer cey ci- cic cie cii cir crc cre cri crr cry cyc cye cyr ec- ecc ece eci ecr eec eee eer eey eic eie eii eir erc ere eri err ery eyc eye eyr icc ice ici icr icy ie- iec iee iei ier iey iic iie iii iir ir- irc ire iri irr iry iyc iye iyr iyy rcc rce rci rcr re- rec ree rei rer rey ric rie rii rir riy rrc rri rrr ry- ryc rye ryr ryy ycc yce yci ycy yec yee yei yer yey yie yii yir yrc yre yyc yye yyy