-er c-- ccc cce ccg cco ccr ccs cct ccu ce- cec cee ceg ceo cer ces cet ceu cgc cge cgg cgo cgr cgs cgt cgu co- coc coe cog coo cor cos cot cou crc cre crg cro crr crs crt cru csc cse csg cso csr css cst csu ctc cte ctg cto ctr cts ctt ctu cuc cue cug cuo cur cus cut cuu ec- ecc ece ecg eco ecr ecs ect ecu eec eee eeg eeo eer ees eet egc ege egg ego egr egs egt egu eo- eoc eoe eog eoo eor eos eot eou erc ere erg ero err ers ert eru es- esc ese esg eso esr ess est esu etc ete etg eto etr ets ett etu eu- euc eue eug eur eus eut gcc gce gcg gco gcr gcs gct gcu ge- gec gee geg geo ger ges get geu ggc ggg ggo ggr ggs ggt ggu goc goe gog goo gor gos got gou grc gre grg gro grr grs grt gru gsc gse gsg gso gsr gss gst gsu gtc gte gtg gto gtr gts gtt gtu gu- guc gue gug guo gur gus gut guu oc- occ ocg oco ocr ocs oct ocu oec oee oeg oeo oer oes oet ogc oge ogg ogo ogs ogt oo- ooc oog ooo oor oos oot or- orc ore org oro orr ors ort oru os- osc ose osg oso osr oss ost osu ot- otc ote otg oto otr ots ott otu ou- ouc oue ouo our ous out rcc rce rcg rco rcr rcs rct rcu re- rec ree reg reo rer res ret reu rgc rge rgg rgo rgr rgs rgt roc roe rog roo ror ros rot rou rrc rrg rrr rrs rrt rru rsc rse rsg rso rsr rss rst rsu rtc rte rtg rto rtr rts rtt rtu ruc rue rug ruo rur rus rut ruu scc sce scg sco scr scs sct scu se- sec see seg seo ser ses set seu sgc sge sgg sgo sgr sgs sgt sgu soc soe sog soo sor sos sot sou sr- src sre srg sro srr srs srt ss- ssc sse ssg sso ssr sss sst ssu stc ste stg sto str sts stt stu suc sue sug suo sur sus sut suu tcc tce tcg tco tcr tcs tct tcu te- tec tee teg teo ter tes tet teu tgc tge tgg tgo tgr tgs tgt tgu to- toc toe tog too tor tos tot tou trc tre trg tro trr trs trt tru tsc tse tsg tso tsr tss tst tsu ttc tte ttg tto ttr tts ttt ttu tuc tue tug tuo tur tus tut tuu ucc uce ucg uco ucr ucs uct ucu uec uee ueg uer ues uet ugc uge ugg ugo ugr ugs ugt ugu uoc uoe uog uoo uor uos uot ur- urc ure urg uro urr urs urt uru usc use usg uso usr uss ust usu utc ute uto utr uts utt utu uuc uue uug uur uus uut uuu