-er -up c-- ccc cce ccg cco ccp ccr ccs ccu ce- cec cee ceg ceo cep cer ces ceu cgc cge cgg cgo cgp cgr cgs cgu co- coc coe cog coo cop cor cos cou cpc cpe cpg cpo cpp cpr cps cpu crc cre crg cro crp crr crs cru csc cse csg cso csp csr css csu cuc cue cug cuo cup cur cus cuu ec- ecc ece ecg eco ecr ecs ecu eec eee eeg eeo eep eer ees egc ege egg ego egp egr egs egu eo- eoc eoe eog eoo eop eor eos eou ep- epc epe epg epo epp epr eps epu erc ere erg ero erp err ers eru es- esc ese esg eso esp esr ess esu eu- euc eue eug eup eur eus g-p gcc gce gcg gco gcp gcr gcs gcu ge- gec gee geg geo gep ger ges geu ggc ggg ggo ggp ggr ggs ggu goc goe gog goo gop gor gos gou gpc gpe gpg gpo gpp gpr gps gpu grc gre grg gro grp grr grs gru gsc gse gsg gso gsp gsr gss gsu gu- guc gue gug guo gup gur gus guu oc- occ ocg oco ocp ocr ocs ocu oec oee oeg oeo oep oer oes ogc oge ogg ogo ogp ogs oo- ooc oog ooo oop oor oos op- opc ope opg opo opp opr ops or- orc ore org oro orp orr ors oru os- osc ose osg oso osp osr oss osu ou- ouc oue ouo oup our ous p-p pcc pce pcg pco pcp pcr pcs pcu pec pee peg peo pep per pes peu pgc pge pgg pgo pgp pgr pgs poc poe pog poo pop por pos pou ppc ppe ppg ppo ppp ppr pps ppu prc pre prg pro prp prr prs pru ps- psc pse psg pso psp psr pss psu puc pue pug pup pur pus puu rcc rce rcg rco rcp rcr rcs rcu re- rec ree reg reo rep rer res reu rgc rge rgg rgo rgp rgr rgs roc roe rog roo rop ror ros rou rpc rpe rpg rpo rpp rpr rps rpu rrc rrg rrp rrr rrs rru rsc rse rsg rso rsp rsr rss rsu ruc rue rug ruo rup rur rus ruu scc sce scg sco scp scr scs scu se- sec see seg seo sep ser ses seu sgc sge sgg sgo sgp sgr sgs sgu soc soe sog soo sop sor sos sou spc spe spg spo spp spr sps spu sr- src sre srg sro srp srr srs ss- ssc sse ssg sso ssp ssr sss ssu suc sue sug suo sup sur sus suu ucc uce ucg uco ucp ucr ucs ucu uec uee ueg uep uer ues ugc uge ugg ugo ugp ugr ugs ugu uoc uoe uog uoo uop uor uos up- upc upe upg upo upp upr ups upu ur- urc ure urg uro urp urr urs uru usc use usg uso usp usr uss usu uuc uue uug uur uus uuu