-er -ol c-- ccc ccd cce ccg ccl cco ccr ccs cdc cdd cde cdg cdl cdo cdr cds ce- cec ced cee ceg cel ceo cer ces cgc cgd cge cgg cgl cgo cgr cgs cl- clc cld cle clg cll clo clr cls co- coc cod coe cog col coo cor cos crc crd cre crg crl cro crr crs csc csd cse csg csl cso csr css dcc dcd dce dcg dcl dco dcr dcs ddc ddd dde ddg ddl ddo ddr dds de- dec ded dee deg del deo der des dgc dgd dge dgg dgl dgr dgs dl- dlc dld dle dlg dll dlo dlr dls doc dod doe dog dol doo dor dos drc drd dre drg drl dro drr drs dsc dsd dse dsg dsl dso dsr dss ec- ecc ecd ece ecg ecl eco ecr ecs ed- edc edd ede edg edl edo edr eds eec eed eee eeg eel eeo eer ees egc egd ege egg egl ego egr egs elc eld ele elg ell elo elr els eo- eoc eod eoe eog eol eoo eor eos erc erd ere erg erl ero err ers es- esc esd ese esg esl eso esr ess g-d gcc gcd gce gcg gcl gco gcr gcs gdc gdd gde gdl gdo gdr gds ge- gec ged gee geg gel geo ger ges ggc ggd ggg ggo ggr ggs glc gld gle glg gll glo glr gls goc god goe gog gol goo gor gos grc grd gre grg grl gro grr grs gsc gsd gse gsg gsl gso gsr gss lcc lcd lce lcg lcl lco lcr lcs ldc ldd lde ldg ldl ldo ldr lds lec led lee leg lel leo ler les lgc lgd lge lgg lgl lgo lgr lgs llc lld lle llg lll llo llr lls loc lod loe log lol loo lor los lrc lrd lrg lro lrr lrs lsc lsd lse lsg lsl lso lsr lss oc- occ ocd ocg ocl oco ocr ocs odc odd ode odg odl odo odr ods oec oed oee oeg oel oeo oer oes ogc ogd oge ogg ogl ogo ogs olc old ole olg oll olo ols oo- ooc ood oog ool ooo oor oos or- orc ord ore org orl oro orr ors os- osc osd ose osg osl oso osr oss rcc rcd rce rcg rcl rco rcr rcs rdc rdd rde rdg rdl rdo rdr rds re- rec red ree reg rel reo rer res rgc rgd rge rgg rgo rgr rgs rlc rld rle rlg rll rlo rlr rls roc rod roe rog rol roo ror ros rrc rrd rrg rrl rrr rrs rsc rsd rse rsg rsl rso rsr rss scc scd sce scg scl sco scr scs sdc sdd sde sdg sdl sdo sdr sds se- sec sed see seg sel seo ser ses sgc sgd sge sgg sgl sgo sgr sgs slc sld sle slg sll slo slr sls soc sod soe sog sol soo sor sos sr- src srd sre srg srl sro srr srs ss- ssc ssd sse ssg ssl sso ssr sss