-er -ey -ic c-- ccc cce ccf cci ccp ccr ccs ce- cec cee cef cei cep cer ces cey cfc cfe cff cfi cfp cfr cfs ci- cic cie cif cii cip cir cis cpc cpe cpf cpi cpp cpr cps crc cre crf cri crp crr crs cry csc cse csf csi csp csr css csy cyc cye cyf cyp cyr cys ec- ecc ece ecf eci ecr ecs eec eee eef eep eer ees eey ef- efc efe eff efi efp efr efs eic eie eif eii eip eir eis ep- epc epe epf epi epp epr eps erc ere erf eri erp err ers ery es- esc ese esf esi esp esr ess esy eyc eye eyp eyr eys fcc fce fcf fci fcp fcr fcs fcy fec fee fef fei fep fer fes fey ffc ffe fff ffi ffp ffr ffs ffy fic fie fif fii fip fir fis fpc fpe fpi fpp fpr fps fpy frc fre frf fri frp frr frs fry fsc fse fsf fsi fsp fsr fss fy- fyc fye fyi fyp i-f icc ice icf ici icp icr ics icy ie- iec iee ief iei iep ier ies iey ifc ife iff ifi ifp ifr ifs ify iic iie iif iii iip iir iis ipc ipe ipf ipi ipp ipr ips ipy ir- irc ire irf iri irp irr irs iry is- isc ise isf isi isp isr iss isy iyc iye iyr iys iyy p-p pcc pce pcf pci pcp pcr pcs pec pee pef pei pep per pes pey pfc pfe pff pfi pfp pfr pfs pfy pic pie pif pii pip pir pis ppc ppe ppf ppi ppp ppr pps prc pre prf pri prp prr prs pry ps- psc pse psf psi psp psr pss psy py- pyc pye pyf pyr pys rcc rce rcf rci rcp rcr rcs re- rec ree ref rei rep rer res rey rfc rfe rff rfi rfp rfr rfs ric rie rif rii rip rir ris riy rpc rpe rpf rpi rpp rpr rps rrc rrf rri rrp rrr rrs rsc rse rsf rsi rsp rsr rss ry- ryc rye ryf ryr rys ryy scc sce scf sci scp scr scs se- sec see sef sei sep ser ses sey sfc sfe sff sfi sfp sfr sfs sic sie sif sii sip sir sis spc spe spf spi spp spr sps spy sr- src sre srf sri srp srr srs sry ss- ssc sse ssf ssi ssp ssr sss sy- syc sye syi syp syr sys ycc yce ycf yci ycp ycs ycy yec yee yef yei yep yer yes yey yfc yfe yff yfr yfs yie yif yii yip yir yis ypf yps yrc yre yrf yrp yrs ysc yse ysi ysp ysr yss ysy yyc yye yyf yys yyy