-er -ey -ic c-- ccc cce cci ccp ccr ce- cec cee cei cep cer cey ci- cic cie cii cip cir cpc cpe cpi cpp cpr crc cre cri crp crr cry cyc cye cyp cyr ec- ecc ece eci ecr eec eee eep eer eey eic eie eii eip eir ep- epc epe epi epp epr erc ere eri erp err ery eyc eye eyp eyr icc ice ici icp icr icy ie- iec iee iei iep ier iey iic iie iii iip iir ipc ipe ipi ipp ipr ipy ir- irc ire iri irp irr iry iyc iye iyr iyy p-p pcc pce pci pcp pcr pec pee pei pep per pey pic pie pii pip pir ppc ppe ppi ppp ppr prc pre pri prp prr pry py- pyc pye pyr rcc rce rci rcp rcr re- rec ree rei rep rer rey ric rie rii rip rir riy rpc rpe rpi rpp rpr rrc rri rrp rrr ry- ryc rye ryr ryy ycc yce yci ycp ycy yec yee yei yep yer yey yie yii yip yir yrc yre yrp yyc yye yyy