-er -ey -ic c-- ccc cce ccf cci ccp ccr ce- cec cee cef cei cep cer cey cfc cfe cff cfi cfp cfr ci- cic cie cif cii cip cir cpc cpe cpf cpi cpp cpr crc cre crf cri crp crr cry cyc cye cyf cyp cyr ec- ecc ece ecf eci ecr eec eee eef eep eer eey ef- efc efe eff efi efp efr eic eie eif eii eip eir ep- epc epe epf epi epp epr erc ere erf eri erp err ery eyc eye eyp eyr fcc fce fcf fci fcp fcr fcy fec fee fef fei fep fer fey ffc ffe fff ffi ffp ffr ffy fic fie fif fii fip fir fpc fpe fpi fpp fpr fpy frc fre frf fri frp frr fry fy- fyc fye fyi fyp i-f icc ice icf ici icp icr icy ie- iec iee ief iei iep ier iey ifc ife iff ifi ifp ifr ify iic iie iif iii iip iir ipc ipe ipf ipi ipp ipr ipy ir- irc ire irf iri irp irr iry iyc iye iyr iyy p-p pcc pce pcf pci pcp pcr pec pee pef pei pep per pey pfc pfe pff pfi pfp pfr pfy pic pie pif pii pip pir ppc ppe ppf ppi ppp ppr prc pre prf pri prp prr pry py- pyc pye pyf pyr rcc rce rcf rci rcp rcr re- rec ree ref rei rep rer rey rfc rfe rff rfi rfp rfr ric rie rif rii rip rir riy rpc rpe rpf rpi rpp rpr rrc rrf rri rrp rrr ry- ryc rye ryf ryr ryy ycc yce ycf yci ycp ycy yec yee yef yei yep yer yey yfc yfe yff yfr yie yif yii yip yir ypf yrc yre yrf yrp yyc yye yyf yyy