-er -ic -ji c-- c-j ccc cce cci ccj cck ccr ce- cec cee cei cej cek cer ci- cic cie cii cij cik cir cjc cjk cjr ckc cki crc cre cri crj crk crr ec- ecc ece eci ecj eck ecr eec eee eek eer eic eie eii eij eik eir ejc eji ekc eke eki ekr erc ere eri erk err icc ice ici icj ick icr ie- iec iee iei iej iek ier iic iie iii iij iir ijc ije iji ijk ikc ike iki ikk ikr ir- irc ire iri irj irk irr j-i jcc jce jci jck jcr jec jee jei jej jek jer jic jie jii jij jir jjc jjj jjk jjr jkk jkr jrc jri jrk jrr kcc kce kci kck kcr ke- kec kee kei kek ker kic kie kii kij kik kir kjc kje kji kjr kkc kke kki kkk kkr krc kri krk krr rcc rce rci rcj rcr re- rec ree rei rek rer ric rie rii rik rir rjc rjk rjr rkc rke rkk rrc rri rrk rrr