-er -ic c-- ccc ccd cce ccg cci cck ccl ccr ccs cdc cdd cde cdg cdi cdk cdl cdr cds ce- cec ced cee ceg cei cek cel cer ces cgc cgd cge cgg cgi cgl cgr cgs ci- cic cid cie cig cii cik cil cir cis ckc ckd cki cks cl- clc cld cle clg cli clk cll clr cls crc crd cre crg cri crk crl crr crs csc csd cse csg csi csk csl csr css dcc dcd dce dcg dci dck dcl dcr dcs ddc ddd dde ddg ddi ddk ddl ddr dds de- dec ded dee deg dei dek del der des dgc dgd dge dgg dgi dgk dgl dgr dgs di- dic did die dig dii dik dil dir dis dkc dke dkg dki dkk dkl dkr dks dl- dlc dld dle dlg dli dlk dll dlr dls drc drd dre drg dri drk drl drr drs dsc dsd dse dsg dsi dsk dsl dsr dss ec- ecc ecd ece ecg eci eck ecl ecr ecs ed- edc edd ede edg edi edk edl edr eds eec eed eee eeg eek eel eer ees egc egd ege egg egi egl egr egs eic eid eie eig eii eik eil eir eis ekc ekd eke ekg eki ekl ekr eks elc eld ele elg eli elk ell elr els erc erd ere erg eri erk erl err ers es- esc esd ese esg esi esk esl esr ess g-d gcc gcd gce gcg gci gck gcl gcr gcs gdc gdd gde gdi gdk gdl gdr gds ge- gec ged gee geg gei gek gel ger ges ggc ggd ggg ggi ggr ggs gic gid gie gig gii gik gil gir gis gkd gks glc gld gle glg gli glk gll glr gls grc grd gre grg gri grk grl grr grs gsc gsd gse gsg gsi gsk gsl gsr gss i-d icc icd ice icg ici ick icl icr ics idc idd ide idg idi idk idl idr ids ie- iec ied iee ieg iei iek iel ier ies igc igd ige igg igi igk igl igr igs iic iid iie iii iil iir iis ikc ike iki ikk ikl ikr iks il- ilc ild ile ilg ili ilk ill ilr ils ir- irc ird ire irg iri irk irl irr irs is- isc isd ise isg isi isk isl isr iss kcc kcd kce kcg kci kck kcl kcr kcs kdc kde kdg kdk kdl kdr kds ke- kec ked kee keg kei kek kel ker kes kgc kgd kgi kgl kgs kic kid kie kig kii kik kil kir kis kkc kke kki kkk kkl kkr kks kl- klc kld klg kli klr kls krc krd krg kri krk krl krr krs ksc ksd kse ksg ksi ksk ksl ksr kss lcc lcd lce lcg lci lck lcl lcr lcs ldc ldd lde ldg ldi ldk ldl ldr lds lec led lee leg lei lek lel ler les lgc lgd lge lgg lgi lgk lgl lgr lgs lic lid lie lig lii lik lil lir lis lkg lkl lkr lks llc lld lle llg lli llk lll llr lls lrc lrd lrg lri lrk lrr lrs lsc lsd lse lsg lsi lsk lsl lsr lss rcc rcd rce rcg rci rcl rcr rcs rdc rdd rde rdg rdi rdl rdr rds re- rec red ree reg rei rek rel rer res rgc rgd rge rgg rgi rgk rgr rgs ric rid rie rig rii rik ril rir ris rkc rke rkg rkk rks rlc rld rle rlg rli rll rlr rls rrc rrd rrg rri rrk rrl rrr rrs rsc rsd rse rsg rsi rsk rsl rsr rss scc scd sce scg sci sck scl scr scs sdc sdd sde sdg sdi sdk sdl sdr sds se- sec sed see seg sei sek sel ser ses sgc sgd sge sgg sgi sgk sgl sgr sgs sic sid sie sig sii sik sil sir sis sk- skc skd ske skg ski skk skl skr sks slc sld sle slg sli slk sll slr sls sr- src srd sre srg sri srk srl srr srs ss- ssc ssd sse ssg ssi ssk ssl ssr sss