-er -ic c-- ccc cce ccg cci ccr ccu ce- cec cee ceg cei cer ceu cgc cge cgg cgi cgr cgu ci- cic cie cig cii cir ciu crc cre crg cri crr cru cuc cue cug cui cur cuu ec- ecc ece ecg eci ecr ecu eec eee eeg eer egc ege egg egi egr egu eic eie eig eii eir eiu erc ere erg eri err eru eu- euc eue eug eui eur gcc gce gcg gci gcr gcu ge- gec gee geg gei ger geu ggc ggg ggi ggr ggu gic gie gig gii gir giu grc gre grg gri grr gru gu- guc gue gug gui gur guu icc ice icg ici icr icu ie- iec iee ieg iei ier igc ige igg igi igr igu iic iie iii iir iiu ir- irc ire irg iri irr iru iu- iuc iue iug iui iur rcc rce rcg rci rcr rcu re- rec ree reg rei rer reu rgc rge rgg rgi rgr ric rie rig rii rir rrc rrg rri rrr rru ruc rue rug rui rur ruu ucc uce ucg uci ucr ucu uec uee ueg uei uer ugc uge ugg ugi ugr ugu uic uie uig uii uir uiu ur- urc ure urg uri urr uru uuc uue uug uur uuu