-er -ic c-- ccc cce ccg cci ccr cct ce- cec cee ceg cei cer cet cgc cge cgg cgi cgr cgt ci- cic cie cig cii cir cit crc cre crg cri crr crt ctc cte ctg cti ctr ctt ec- ecc ece ecg eci ecr ect eec eee eeg eer eet egc ege egg egi egr egt eic eie eig eii eir eit erc ere erg eri err ert etc ete etg eti etr ett gcc gce gcg gci gcr gct ge- gec gee geg gei ger get ggc ggg ggi ggr ggt gic gie gig gii gir git grc gre grg gri grr grt gtc gte gtg gti gtr gtt icc ice icg ici icr ict ie- iec iee ieg iei ier iet igc ige igg igi igr igt iic iie iii iir iit ir- irc ire irg iri irr irt itc ite itg iti itt rcc rce rcg rci rcr rct re- rec ree reg rei rer ret rgc rge rgg rgi rgr rgt ric rie rig rii rir rit rrc rrg rri rrr rrt rtc rte rtg rti rtr rtt tcc tce tcg tci tcr tct te- tec tee teg tei ter tet tgc tge tgg tgi tgr tgt tic tie tig tii tir tit trc tre trg tri trr trt ttc tte ttg tti ttr ttt