-er -ic c-- ccc cce ccg cci ccr ce- cec cee ceg cei cer cgc cge cgg cgi cgr ci- cic cie cig cii cir crc cre crg cri crr ec- ecc ece ecg eci ecr eec eee eeg eer egc ege egg egi egr eic eie eig eii eir erc ere erg eri err gcc gce gcg gci gcr ge- gec gee geg gei ger ggc ggg ggi ggr gic gie gig gii gir grc gre grg gri grr icc ice icg ici icr ie- iec iee ieg iei ier igc ige igg igi igr iic iie iii iir ir- irc ire irg iri irr rcc rce rcg rci rcr re- rec ree reg rei rer rgc rge rgg rgi rgr ric rie rig rii rir rrc rrg rri rrr