-er -ol c-- ccc cce ccf ccg ccl cco ccp ccr ccs ce- cec cee cef ceg cel ceo cep cer ces cfc cfe cff cfg cfl cfo cfp cfr cfs cgc cge cgg cgl cgo cgp cgr cgs cl- clc cle clf clg cll clo clp clr cls co- coc coe cof cog col coo cop cor cos cpc cpe cpf cpg cpl cpo cpp cpr cps crc cre crf crg crl cro crp crr crs csc cse csf csg csl cso csp csr css ec- ecc ece ecf ecg ecl eco ecr ecs eec eee eef eeg eel eeo eep eer ees ef- efc efe eff efg efl efo efp efr efs egc ege egf egg egl ego egp egr egs elc ele elf elg ell elo elp elr els eo- eoc eoe eof eog eol eoo eop eor eos ep- epc epe epf epg epl epo epp epr eps erc ere erf erg erl ero erp err ers es- esc ese esf esg esl eso esp esr ess fcc fce fcf fcg fcl fco fcp fcr fcs fec fee fef feg fel feo fep fer fes ffc ffe fff ffg ffl ffo ffp ffr ffs fgc fge fgf fgg fgl fgp fgr fgs flc fle flf flg fll flo flp flr fls foc foe fof fog fol foo fop for fos fpc fpe fpg fpl fpo fpp fpr fps frc fre frf frg frl fro frp frr frs fsc fse fsf fsg fsl fso fsp fsr fss g-p gcc gce gcf gcg gcl gco gcp gcr gcs ge- gec gee gef geg gel geo gep ger ges gfc gfe gff gfl gfo gfp gfr gfs ggc ggg ggo ggp ggr ggs glc gle glf glg gll glo glp glr gls goc goe gof gog gol goo gop gor gos gpc gpe gpf gpg gpl gpo gpp gpr gps grc gre grf grg grl gro grp grr grs gsc gse gsf gsg gsl gso gsp gsr gss l-p lcc lce lcf lcg lcl lco lcp lcr lcs lec lee lef leg lel leo lep ler les lfc lfe lff lfg lfl lfo lfp lfr lfs lgc lge lgf lgg lgl lgo lgp lgr lgs llc lle llf llg lll llo llp llr lls loc loe lof log lol loo lop lor los lpc lpe lpf lpg lpl lpo lpp lpr lps lrc lrf lrg lro lrp lrr lrs lsc lse lsf lsg lsl lso lsp lsr lss oc- occ ocf ocg ocl oco ocp ocr ocs oec oee oef oeg oel oeo oep oer oes of- ofc ofe off ofg ofl ofo ofp ofr ofs ogc oge ogf ogg ogl ogo ogp ogs olc ole olf olg oll olo olp ols oo- ooc oof oog ool ooo oop oor oos op- opc ope opf opg opl opo opp opr ops or- orc ore orf org orl oro orp orr ors os- osc ose osf osg osl oso osp osr oss p-p pcc pce pcf pcg pcl pco pcp pcr pcs pec pee pef peg pel peo pep per pes pfc pfe pff pfg pfl pfo pfp pfr pfs pgc pge pgf pgg pgl pgo pgp pgr pgs plc ple plf plg pll plo plp plr pls poc poe pof pog pol poo pop por pos ppc ppe ppf ppg ppl ppo ppp ppr pps prc pre prf prg prl pro prp prr prs ps- psc pse psf psg psl pso psp psr pss rcc rce rcf rcg rcl rco rcp rcr rcs re- rec ree ref reg rel reo rep rer res rfc rfe rff rfg rfl rfo rfp rfr rfs rgc rge rgf rgg rgo rgp rgr rgs rlc rle rlf rlg rll rlo rlp rlr rls roc roe rof rog rol roo rop ror ros rpc rpe rpf rpg rpl rpo rpp rpr rps rrc rrf rrg rrl rrp rrr rrs rsc rse rsf rsg rsl rso rsp rsr rss scc sce scf scg scl sco scp scr scs se- sec see sef seg sel seo sep ser ses sfc sfe sff sfg sfl sfo sfp sfr sfs sgc sge sgf sgg sgl sgo sgp sgr sgs slc sle slf slg sll slo slp slr sls soc soe sof sog sol soo sop sor sos spc spe spf spg spl spo spp spr sps sr- src sre srf srg srl sro srp srr srs ss- ssc sse ssf ssg ssl sso ssp ssr sss