-er -ic c-- ccc ccd cce ccg cci ccr ccu cdc cdd cde cdg cdi cdr cdu ce- cec ced cee ceg cei cer ceu cgc cgd cge cgg cgi cgr cgu ci- cic cid cie cig cii cir ciu crc crd cre crg cri crr cru cuc cud cue cug cui cur cuu dcc dcd dce dcg dci dcr dcu ddc ddd dde ddg ddi ddr ddu de- dec ded dee deg dei der deu dgc dgd dge dgg dgi dgr dgu di- dic did die dig dii dir diu drc drd dre drg dri drr dru duc dud due dug dui dur ec- ecc ecd ece ecg eci ecr ecu ed- edc edd ede edg edi edr edu eec eed eee eeg eer egc egd ege egg egi egr egu eic eid eie eig eii eir eiu erc erd ere erg eri err eru eu- euc eud eue eug eui eur g-d gcc gcd gce gcg gci gcr gcu gdc gdd gde gdi gdr gdu ge- gec ged gee geg gei ger geu ggc ggd ggg ggi ggr ggu gic gid gie gig gii gir giu grc grd gre grg gri grr gru gu- guc gud gue gug gui gur guu i-d icc icd ice icg ici icr icu idc idd ide idg idi idr idu ie- iec ied iee ieg iei ier igc igd ige igg igi igr igu iic iid iie iii iir iiu ir- irc ird ire irg iri irr iru iu- iuc iud iue iug iui iur rcc rcd rce rcg rci rcr rcu rdc rdd rde rdg rdi rdr rdu re- rec red ree reg rei rer reu rgc rgd rge rgg rgi rgr ric rid rie rig rii rir rrc rrd rrg rri rrr rru ruc rud rue rug rui rur ruu ucc ucd uce ucg uci ucr ucu udc udd ude udg udi udr udu uec ued uee ueg uei uer ugc uge ugg ugi ugr ugu uic uid uie uig uii uir uiu ur- urc urd ure urg uri urr uru uuc uue uug uur uuu