-er c-- ccc cce ccg cco ccr cct ccu ce- cec cee ceg ceo cer cet ceu cgc cge cgg cgo cgr cgt cgu co- coc coe cog coo cor cot cou crc cre crg cro crr crt cru ctc cte ctg cto ctr ctt ctu cuc cue cug cuo cur cut cuu ec- ecc ece ecg eco ecr ect ecu eec eee eeg eeo eer eet egc ege egg ego egr egt egu eo- eoc eoe eog eoo eor eot eou erc ere erg ero err ert eru etc ete etg eto etr ett etu eu- euc eue eug eur eut gcc gce gcg gco gcr gct gcu ge- gec gee geg geo ger get geu ggc ggg ggo ggr ggt ggu goc goe gog goo gor got gou grc gre grg gro grr grt gru gtc gte gtg gto gtr gtt gtu gu- guc gue gug guo gur gut guu oc- occ ocg oco ocr oct ocu oec oee oeg oeo oer oet ogc oge ogg ogo ogt oo- ooc oog ooo oor oot or- orc ore org oro orr ort oru ot- otc ote otg oto otr ott otu ou- ouc oue ouo our out rcc rce rcg rco rcr rct rcu re- rec ree reg reo rer ret reu rgc rge rgg rgo rgr rgt roc roe rog roo ror rot rou rrc rrg rrr rrt rru rtc rte rtg rto rtr rtt rtu ruc rue rug ruo rur rut ruu tcc tce tcg tco tcr tct tcu te- tec tee teg teo ter tet teu tgc tge tgg tgo tgr tgt tgu to- toc toe tog too tor tot tou trc tre trg tro trr trt tru ttc tte ttg tto ttr ttt ttu tuc tue tug tuo tur tut tuu ucc uce ucg uco ucr uct ucu uec uee ueg uer uet ugc uge ugg ugo ugr ugt ugu uoc uoe uog uoo uor uot ur- urc ure urg uro urr urt uru utc ute uto utr utt utu uuc uue uug uur uut uuu