-er -ol c-- ccc ccd cce ccg ccl cco ccr cdc cdd cde cdg cdl cdo cdr ce- cec ced cee ceg cel ceo cer cgc cgd cge cgg cgl cgo cgr cl- clc cld cle clg cll clo clr co- coc cod coe cog col coo cor crc crd cre crg crl cro crr dcc dcd dce dcg dcl dco dcr ddc ddd dde ddg ddl ddo ddr de- dec ded dee deg del deo der dgc dgd dge dgg dgl dgr dl- dlc dld dle dlg dll dlo dlr doc dod doe dog dol doo dor drc drd dre drg drl dro drr ec- ecc ecd ece ecg ecl eco ecr ed- edc edd ede edg edl edo edr eec eed eee eeg eel eeo eer egc egd ege egg egl ego egr elc eld ele elg ell elo elr eo- eoc eod eoe eog eol eoo eor erc erd ere erg erl ero err g-d gcc gcd gce gcg gcl gco gcr gdc gdd gde gdl gdo gdr ge- gec ged gee geg gel geo ger ggc ggd ggg ggo ggr glc gld gle glg gll glo glr goc god goe gog gol goo gor grc grd gre grg grl gro grr lcc lcd lce lcg lcl lco lcr ldc ldd lde ldg ldl ldo ldr lec led lee leg lel leo ler lgc lgd lge lgg lgl lgo lgr llc lld lle llg lll llo llr loc lod loe log lol loo lor lrc lrd lrg lro lrr oc- occ ocd ocg ocl oco ocr odc odd ode odg odl odo odr oec oed oee oeg oel oeo oer ogc ogd oge ogg ogl ogo olc old ole olg oll olo oo- ooc ood oog ool ooo oor or- orc ord ore org orl oro orr rcc rcd rce rcg rcl rco rcr rdc rdd rde rdg rdl rdo rdr re- rec red ree reg rel reo rer rgc rgd rge rgg rgo rgr rlc rld rle rlg rll rlo rlr roc rod roe rog rol roo ror rrc rrd rrg rrl rrr