-er -ic c-- ccc cce ccg cci cck ccr ce- cec cee ceg cei cek cer cgc cge cgg cgi cgr ci- cic cie cig cii cik cir ckc cki crc cre crg cri crk crr ec- ecc ece ecg eci eck ecr eec eee eeg eek eer egc ege egg egi egr eic eie eig eii eik eir ekc eke ekg eki ekr erc ere erg eri erk err gcc gce gcg gci gck gcr ge- gec gee geg gei gek ger ggc ggg ggi ggr gic gie gig gii gik gir grc gre grg gri grk grr icc ice icg ici ick icr ie- iec iee ieg iei iek ier igc ige igg igi igk igr iic iie iii iir ikc ike iki ikk ikr ir- irc ire irg iri irk irr kcc kce kcg kci kck kcr ke- kec kee keg kei kek ker kgc kgi kic kie kig kii kik kir kkc kke kki kkk kkr krc krg kri krk krr rcc rce rcg rci rcr re- rec ree reg rei rek rer rgc rge rgg rgi rgk rgr ric rie rig rii rik rir rkc rke rkg rkk rrc rrg rri rrk rrr