-er -ic c-- ccc ccd cce ccg cci ccl ccr ccs cdc cdd cde cdg cdi cdl cdr cds ce- cec ced cee ceg cei cel cer ces cgc cgd cge cgg cgi cgl cgr cgs ci- cic cid cie cig cii cil cir cis cl- clc cld cle clg cli cll clr cls crc crd cre crg cri crl crr crs csc csd cse csg csi csl csr css dcc dcd dce dcg dci dcl dcr dcs ddc ddd dde ddg ddi ddl ddr dds de- dec ded dee deg dei del der des dgc dgd dge dgg dgi dgl dgr dgs di- dic did die dig dii dil dir dis dl- dlc dld dle dlg dli dll dlr dls drc drd dre drg dri drl drr drs dsc dsd dse dsg dsi dsl dsr dss ec- ecc ecd ece ecg eci ecl ecr ecs ed- edc edd ede edg edi edl edr eds eec eed eee eeg eel eer ees egc egd ege egg egi egl egr egs eic eid eie eig eii eil eir eis elc eld ele elg eli ell elr els erc erd ere erg eri erl err ers es- esc esd ese esg esi esl esr ess g-d gcc gcd gce gcg gci gcl gcr gcs gdc gdd gde gdi gdl gdr gds ge- gec ged gee geg gei gel ger ges ggc ggd ggg ggi ggr ggs gic gid gie gig gii gil gir gis glc gld gle glg gli gll glr gls grc grd gre grg gri grl grr grs gsc gsd gse gsg gsi gsl gsr gss i-d icc icd ice icg ici icl icr ics idc idd ide idg idi idl idr ids ie- iec ied iee ieg iei iel ier ies igc igd ige igg igi igl igr igs iic iid iie iii iil iir iis il- ilc ild ile ilg ili ill ilr ils ir- irc ird ire irg iri irl irr irs is- isc isd ise isg isi isl isr iss lcc lcd lce lcg lci lcl lcr lcs ldc ldd lde ldg ldi ldl ldr lds lec led lee leg lei lel ler les lgc lgd lge lgg lgi lgl lgr lgs lic lid lie lig lii lil lir lis llc lld lle llg lli lll llr lls lrc lrd lrg lri lrr lrs lsc lsd lse lsg lsi 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 rel rer res rgc rgd rge rgg rgi rgr rgs ric rid rie rig rii ril rir ris rlc rld rle rlg rli rll rlr rls rrc rrd rrg rri rrl rrr rrs rsc rsd rse rsg rsi rsl rsr rss scc scd sce scg sci scl scr scs sdc sdd sde sdg sdi sdl sdr sds se- sec sed see seg sei sel ser ses sgc sgd sge sgg sgi sgl sgr sgs sic sid sie sig sii sil sir sis slc sld sle slg sli sll slr sls sr- src srd sre srg sri srl srr srs ss- ssc ssd sse ssg ssi ssl ssr sss