-er -ey c-- ccc cce ccg cco ccr ccs ccu ce- cec cee ceg ceo cer ces ceu cey cgc cge cgg cgo cgr cgs cgu cgy co- coc coe cog coo cor cos cou coy crc cre crg cro crr crs cru cry csc cse csg cso csr css csu csy cuc cue cug cuo cur cus cuu cuy cyc cye cyg cyo cyr cys ec- ecc ece ecg eco ecr ecs ecu eec eee eeg eeo eer ees eey egc ege egg ego egr egs egu egy eo- eoc eoe eog eoo eor eos eou erc ere erg ero err ers eru ery es- esc ese esg eso esr ess esu esy eu- euc eue eug eur eus eyc eye eyo eyr eys gcc gce gcg gco gcr gcs gcu ge- gec gee geg geo ger ges geu gey ggc ggg ggo ggr ggs ggu goc goe gog goo gor gos gou goy grc gre grg gro grr grs gru gry gsc gse gsg gso gsr gss gsu gu- guc gue gug guo gur gus guu guy gy- gye gyo gyr gys oc- occ ocg oco ocr ocs ocu oec oee oeg oeo oer oes oey ogc oge ogg ogo ogs ogy oo- ooc oog ooo oor oos or- orc ore org oro orr ors oru ory os- osc ose osg oso osr oss osu ou- ouc oue ouo our ous oye oyo oys rcc rce rcg rco rcr rcs rcu re- rec ree reg reo rer res reu rey rgc rge rgg rgo rgr rgs roc roe rog roo ror ros rou roy rrc rrg rrr rrs rru rsc rse rsg rso rsr rss rsu ruc rue rug ruo rur rus ruu ruy ry- ryc rye ryg ryo ryr rys ryu ryy scc sce scg sco scr scs scu se- sec see seg seo ser ses seu sey sgc sge sgg sgo sgr sgs sgu soc soe sog soo sor sos sou soy sr- src sre srg sro srr srs sry ss- ssc sse ssg sso ssr sss ssu suc sue sug suo sur sus suu suy sy- syc sye syg syr sys syu ucc uce ucg uco ucr ucs ucu uec uee ueg uer ues uey ugc uge ugg ugo ugr ugs ugu uoc uoe uog uoo uor uos ur- urc ure urg uro urr urs uru ury usc use usg uso usr uss usu uuc uue uug uur uus uuu uyc uyo uys uyu ycc yce yco ycs ycu ycy yec yee yeg yeo yer yes yey ygc ygo yoc yoe yog yoo yor yos you yoy yrc yre yrg yro yrs yru ysc yse ysg yso ysr yss ysu ysy yue yug yuo yur yus yuu yuy yyc yye yyg yys yyu yyy