-er -ey c-- ccc cce ccg cck cco ccp ccr ccs ce- cec cee ceg cek ceo cep cer ces cey cgc cge cgg cgo cgp cgr cgs cgy ckc cko cks cky co- coc coe cog cok coo cop cor cos coy cpc cpe cpg cpk cpo cpp cpr cps crc cre crg crk cro crp crr crs cry csc cse csg csk cso csp csr css csy cyc cye cyg cyk cyo cyp cyr cys ec- ecc ece ecg eck eco ecr ecs eec eee eeg eek eeo eep eer ees eey egc ege egg ego egp egr egs egy ekc eke ekg eko ekp ekr eks eky eo- eoc eoe eog eok eoo eop eor eos ep- epc epe epg epo epp epr eps erc ere erg erk ero erp err ers ery es- esc ese esg esk eso esp esr ess esy eyc eye eyo eyp eyr eys g-p gcc gce gcg gck gco gcp gcr gcs ge- gec gee geg gek geo gep ger ges gey ggc ggg ggo ggp ggr ggs gko gkp gks goc goe gog gok goo gop gor gos goy gpc gpe gpg gpk gpo gpp gpr gps grc gre grg grk gro grp grr grs gry gsc gse gsg gsk gso gsp gsr gss gy- gye gyo gyp gyr gys kcc kce kcg kck kcp kcr kcs ke- kec kee keg kek keo kep ker kes key kgc kgo kgp kgs kgy kkc kke kkk kkp kkr kks kky koc koe kog kok koo kop kor kos koy kpc kpe kpk kpo kpp kpr kps krc krg krk kro krp krr krs kry ksc kse ksg ksk kso ksp ksr kss kyc kye kyo kyp kyr kys oc- occ ocg ock oco ocp ocr ocs oec oee oeg oeo oep oer oes oey ogc oge ogg ogo ogp ogs ogy okc oke okg okk oko okp okr oks oo- ooc oog ook ooo oop oor oos op- opc ope opg opk opo opp opr ops opy or- orc ore org ork oro orp orr ors ory os- osc ose osg osk oso osp osr oss oye oyo oys p-p pcc pce pcg pck pco pcp pcr pcs pec pee peg pek peo pep per pes pey pgc pge pgg pgk pgo pgp pgr pgs pgy pkc pke pkg pko pkp pkr pks pky poc poe pog pok poo pop por pos poy ppc ppe ppg ppk ppo ppp ppr pps prc pre prg prk pro prp prr prs pry ps- psc pse psg psk pso psp psr pss psy py- pyc pye pyg pyk pyo pyr pys rcc rce rcg rco rcp rcr rcs re- rec ree reg rek reo rep rer res rey rgc rge rgg rgk rgo rgp rgr rgs rkc rke rkg rkk rko rkp rks rky roc roe rog rok roo rop ror ros roy rpc rpe rpg rpk rpo rpp rpr rps rrc rrg rrk rrp rrr rrs rsc rse rsg rsk rso rsp rsr rss ry- ryc rye ryg ryk ryo ryr rys ryy scc sce scg sck sco scp scr scs se- sec see seg sek seo sep ser ses sey sgc sge sgg sgk sgo sgp sgr sgs sk- skc ske skg skk sko skp skr sks sky soc soe sog sok soo sop sor sos soy spc spe spg spk spo spp spr sps spy sr- src sre srg srk sro srp srr srs sry ss- ssc sse ssg ssk sso ssp ssr sss sy- syc sye syg syk syp syr sys ycc yce yco ycp ycs ycy yec yee yeg yek yeo yep yer yes yey ygc ygo ykk yoc yoe yog yok yoo yop yor yos yoy ypg ypo yps yrc yre yrg yro yrp yrs ysc yse ysg ysk yso ysp ysr yss ysy yyc yye yyg yys yyy