-er c-- ccc cce ccf ccg cco ccr ccs ccu ce- cec cee cef ceg ceo cer ces ceu cfc cfe cff cfg cfo cfr cfs cfu cgc cge cgg cgo cgr cgs cgu co- coc coe cof cog coo cor cos cou crc cre crf crg cro crr crs cru csc cse csf csg cso csr css csu cuc cue cuf cug cuo cur cus cuu ec- ecc ece ecf ecg eco ecr ecs ecu eec eee eef eeg eeo eer ees ef- efc efe eff efg efo efr efs egc ege egf egg ego egr egs egu eo- eoc eoe eof eog eoo eor eos eou erc ere erf erg ero err ers eru es- esc ese esf esg eso esr ess esu eu- euc eue euf eug eur eus fcc fce fcf fcg fco fcr fcs fcu fec fee fef feg feo fer fes feu ffc ffe fff ffg ffo ffr ffs ffu fgc fge fgf fgg fgr fgs foc foe fof fog foo for fos fou frc fre frf frg fro frr frs fru fsc fse fsf fsg fso fsr fss fsu fue fuf fug fuo fur fus fuu gcc gce gcf gcg gco gcr gcs gcu ge- gec gee gef geg geo ger ges geu gfc gfe gff gfo gfr gfs ggc ggg ggo ggr ggs ggu goc goe gof gog goo gor gos gou grc gre grf grg gro grr grs gru gsc gse gsf gsg gso gsr gss gsu gu- guc gue guf gug guo gur gus guu oc- occ ocf ocg oco ocr ocs ocu oec oee oef oeg oeo oer oes of- ofc ofe off ofg ofo ofr ofs ofu ogc oge ogf ogg ogo ogs oo- ooc oof oog ooo oor oos or- orc ore orf org oro orr ors oru os- osc ose osf osg oso osr oss osu ou- ouc oue ouf ouo our ous rcc rce rcf rcg rco rcr rcs rcu re- rec ree ref reg reo rer res reu rfc rfe rff rfg rfo rfr rfs rfu rgc rge rgf rgg rgo rgr rgs roc roe rof rog roo ror ros rou rrc rrf rrg rrr rrs rru rsc rse rsf rsg rso rsr rss rsu ruc rue ruf rug ruo rur rus ruu scc sce scf scg sco scr scs scu se- sec see sef seg seo ser ses seu sfc sfe sff sfg sfo sfr sfs sfu sgc sge sgf sgg sgo sgr sgs sgu soc soe sof sog soo sor sos sou sr- src sre srf srg sro srr srs ss- ssc sse ssf ssg sso ssr sss ssu suc sue suf sug suo sur sus suu ucc uce ucf ucg uco ucr ucs ucu uec uee uef ueg uer ues ufc ufe uff ufg ufo ufr ufs ufu ugc uge ugf ugg ugo ugr ugs ugu uoc uoe uog uoo uor uos ur- urc ure urf urg uro urr urs uru usc use usf usg uso usr uss usu uuc uue uug uur uus uuu