-er -ic c-- ccc cce ccg cci cck ccl ccn ccr ccs ce- cec cee ceg cei cek cel cen cer ces cgc cge cgg cgi cgl cgn cgr cgs ci- cic cie cig cii cik cil cin cir cis ckc cki cks cl- clc cle clg cli clk cll cln clr cls cn- cnc cne cng cni cnl cnn cnr cns crc cre crg cri crk crl crn crr crs csc cse csg csi csk csl csn csr css ec- ecc ece ecg eci eck ecl ecn ecr ecs eec eee eeg eek eel een eer ees egc ege egg egi egl egn egr egs eic eie eig eii eik eil ein eir eis ekc eke ekg eki ekl ekr eks elc ele elg eli elk ell eln elr els en- enc ene eng eni enk enl enn enr ens erc ere erg eri erk erl ern err ers es- esc ese esg esi esk esl esn esr ess gcc gce gcg gci gck gcl gcn gcr gcs ge- gec gee geg gei gek gel gen ger ges ggc ggg ggi ggn ggr ggs gic gie gig gii gik gil gin gir gis gkn gks glc gle glg gli glk gll gln glr gls gnc gne gni gnl gnn gnr gns grc gre grg gri grk grl grn grr grs gsc gse gsg gsi gsk gsl gsn gsr gss icc ice icg ici ick icl icn icr ics ie- iec iee ieg iei iek iel ien ier ies igc ige igg igi igk igl ign igr igs iic iie iii iil iin iir iis ikc ike iki ikk ikl ikr iks il- ilc ile ilg ili ilk ill iln ilr ils in- inc ine ing ini ink inl inn inr ins ir- irc ire irg iri irk irl irn irr irs is- isc ise isg isi isk isl isn isr iss kcc kce kcg kci kck kcl kcn kcr kcs ke- kec kee keg kei kek kel ken ker kes kgc kgi kgl kgs kic kie kig kii kik kil kin kir kis kkc kke kki kkk kkl kkn kkr kks kl- klc klg kli klr kls kn- knc kne kng kni knk knl knn knr krc krg kri krk krl krn krr krs ksc kse ksg ksi ksk ksl ksn ksr kss lcc lce lcg lci lck lcl lcn lcr lcs lec lee leg lei lek lel len ler les lgc lge lgg lgi lgk lgl lgn lgr lgs lic lie lig lii lik lil lin lir lis lkg lkl lkr lks llc lle llg lli llk lll lln llr lls lnc lne lng lni lnk lnl lnn lnr lns lrc lrg lri lrk lrn lrr lrs lsc lse lsg lsi lsk lsl lsn lsr lss n-i ncc nce ncg nci nck ncl ncn ncr ncs ne- nec nee neg nei nek nel nen ner nes ngc nge ngg ngi ngk ngl ngn ngs nic nie nig nii nik nil nin nir nis nkc nke nki nkk nkn nkr nks nlc nle nlg nli nlk nll nln nlr nls nnc nne nng nni nnk nnl nnn nns nrc nre nrg nri nrk nrl nrn nrr nrs nsc nse nsg nsi nsk nsl nsn nsr nss rcc rce rcg rci rcl rcn rcr rcs re- rec ree reg rei rek rel ren rer res rgc rge rgg rgi rgk rgn rgr rgs ric rie rig rii rik ril rin rir ris rkc rke rkg rkk rks rlc rle rlg rli rll rln rlr rls rnc rng rni rnn rnr rns rrc rrg rri rrk rrl rrn rrr rrs rsc rse rsg rsi rsk rsl rsn rsr rss scc sce scg sci sck scl scn scr scs se- sec see seg sei sek sel sen ser ses sgc sge sgg sgi sgk sgl sgn sgr sgs sic sie sig sii sik sil sin sir sis sk- skc ske skg ski skk skl skr sks slc sle slg sli slk sll sln slr sls snc sne sng sni snk snl snn snr sns sr- src sre srg sri srk srl srn srr srs ss- ssc sse ssg ssi ssk ssl ssn ssr sss