-er -ic -ji c-- c-j ccc cce ccf cci ccj cck ccr ccs ce- cec cee cef cei cej cek cer ces cfc cfe cff cfi cfk cfr cfs ci- cic cie cif cii cij cik cir cis cjc cjf cjk cjr cjs ckc cki cks crc cre crf cri crj crk crr crs csc cse csf csi csj csk csr css ec- ecc ece ecf eci ecj eck ecr ecs eec eee eef eek eer ees ef- efc efe eff efi efr efs eic eie eif eii eij eik eir eis ejc ejf eji ekc eke ekf eki ekr eks erc ere erf eri erk err ers es- esc ese esf esi esk esr ess fcc fce fcf fci fcj fck fcr fcs fec fee fef fei fek fer fes ffc ffe fff ffi ffk ffr ffs fic fie fif fii fij fik fir fis fjc fji fjs fkc fkf fki fkj fkk frc fre frf fri frj frk frr frs fsc fse fsf fsi fsj fsk fsr fss i-f icc ice icf ici icj ick icr ics ie- iec iee ief iei iej iek ier ies ifc ife iff ifi ifr ifs iic iie iif iii iij iir iis ijc ije ijf iji ijk ijs ikc ike ikf iki ikk ikr iks ir- irc ire irf iri irj irk irr irs is- isc ise isf isi isj isk isr iss j-i jcc jce jcf jci jck jcr jcs jec jee jef jei jej jek jer jes jfc jfe jff jfi jfj jfk jfr jfs jic jie jif jii jij jir jis jjc jjf jjj jjk jjr jjs jkk jkr jks jrc jrf jri jrk jrr jrs jsc jse jsf jsi jsj jsk jsr jss kcc kce kci kck kcr kcs ke- kec kee kef kei kek ker kes kfc kff kfi kfs kic kie kif kii kij kik kir kis kjc kje kji kjr kjs kkc kke kki kkk kkr kks krc krf kri krk krr krs ksc kse ksf ksi ksk ksr kss rcc rce rcf rci rcj rcr rcs re- rec ree ref rei rek rer res rfc rfe rff rfi rfj rfk rfr rfs ric rie rif rii rik rir ris rjc rjf rjk rjr rkc rke rkf rkk rks rrc rrf rri rrk rrr rrs rsc rse rsf rsi rsj rsk rsr rss scc sce scf sci scj sck scr scs se- sec see sef sei sej sek ser ses sfc sfe sff sfi sfj sfk sfr sfs sic sie sif sii sij sik sir sis sjc sje sjf sji sjj sjk sjr sjs sk- skc ske skf ski skj skk skr sks sr- src sre srf sri srj srk srr srs ss- ssc sse ssf ssi ssj ssk ssr sss