-er -ic c-- ccc cce ccg cci cck ccl ccp ccr ccs ce- cec cee ceg cei cek cel cep cer ces cgc cge cgg cgi cgl cgp cgr cgs ci- cic cie cig cii cik cil cip cir cis ckc cki cks cl- clc cle clg cli clk cll clp clr cls cpc cpe cpg cpi cpk cpl cpp cpr cps crc cre crg cri crk crl crp crr crs csc cse csg csi csk csl csp csr css ec- ecc ece ecg eci eck ecl ecr ecs eec eee eeg eek eel eep eer ees egc ege egg egi egl egp egr egs eic eie eig eii eik eil eip eir eis ekc eke ekg eki ekl ekp ekr eks elc ele elg eli elk ell elp elr els ep- epc epe epg epi epl epp epr eps erc ere erg eri erk erl erp err ers es- esc ese esg esi esk esl esp esr ess g-p gcc gce gcg gci gck gcl gcp gcr gcs ge- gec gee geg gei gek gel gep ger ges ggc ggg ggi ggp ggr ggs gic gie gig gii gik gil gip gir gis gkp gks glc gle glg gli glk gll glp glr gls gpc gpe gpg gpi gpk gpl gpp gpr gps grc gre grg gri grk grl grp grr grs gsc gse gsg gsi gsk gsl gsp gsr gss icc ice icg ici ick icl icp icr ics ie- iec iee ieg iei iek iel iep ier ies igc ige igg igi igk igl igp igr igs iic iie iii iil iip iir iis ikc ike iki ikk ikl ikr iks il- ilc ile ilg ili ilk ill ilp ilr ils ipc ipe ipg ipi ipl ipp ipr ips ir- irc ire irg iri irk irl irp irr irs is- isc ise isg isi isk isl isp isr iss kcc kce kcg kci kck kcl kcp kcr kcs ke- kec kee keg kei kek kel kep ker kes kgc kgi kgl kgp kgs kic kie kig kii kik kil kip kir kis kkc kke kki kkk kkl kkp kkr kks kl- klc klg kli klr kls kpc kpe kpi kpk kpl kpp kpr kps krc krg kri krk krl krp krr krs ksc kse ksg ksi ksk ksl ksp ksr kss l-p lcc lce lcg lci lck lcl lcp lcr lcs lec lee leg lei lek lel lep ler les lgc lge lgg lgi lgk lgl lgp lgr lgs lic lie lig lii lik lil lip lir lis lkg lkl lkp lkr lks llc lle llg lli llk lll llp llr lls lpc lpe lpg lpi lpk lpl lpp lpr lps lrc lrg lri lrk lrp lrr lrs lsc lse lsg lsi lsk lsl lsp lsr lss p-p pcc pce pcg pci pck pcl pcp pcr pcs pec pee peg pei pek pel pep per pes pgc pge pgg pgi pgk pgl pgp pgr pgs pic pie pig pii pik pil pip pir pis pkc pke pkg pki pkl pkp pkr pks plc ple plg pli plk pll plp plr pls ppc ppe ppg ppi ppk ppl ppp ppr pps prc pre prg pri prk prl prp prr prs ps- psc pse psg psi psk psl psp psr pss rcc rce rcg rci rcl rcp rcr rcs re- rec ree reg rei rek rel rep rer res rgc rge rgg rgi rgk rgp rgr rgs ric rie rig rii rik ril rip rir ris rkc rke rkg rkk rkp rks rlc rle rlg rli rll rlp rlr rls rpc rpe rpg rpi rpk rpl rpp rpr rps rrc rrg rri rrk rrl rrp rrr rrs rsc rse rsg rsi rsk rsl rsp rsr rss scc sce scg sci sck scl scp scr scs se- sec see seg sei sek sel sep ser ses sgc sge sgg sgi sgk sgl sgp sgr sgs sic sie sig sii sik sil sip sir sis sk- skc ske skg ski skk skl skp skr sks slc sle slg sli slk sll slp slr sls spc spe spg spi spk spl spp spr sps sr- src sre srg sri srk srl srp srr srs ss- ssc sse ssg ssi ssk ssl ssp ssr sss