-er -ol c-- ccc ccd cce ccg cck ccl cco ccr cdc cdd cde cdg cdk cdl cdo cdr ce- cec ced cee ceg cek cel ceo cer cgc cgd cge cgg cgl cgo cgr ckc ckd cko cl- clc cld cle clg clk cll clo clr co- coc cod coe cog cok col coo cor crc crd cre crg crk crl cro crr dcc dcd dce dcg dck dcl dco dcr ddc ddd dde ddg ddk ddl ddo ddr de- dec ded dee deg dek del deo der dgc dgd dge dgg dgk dgl dgr dkc dke dkg dkk dkl dko dkr dl- dlc dld dle dlg dlk dll dlo dlr doc dod doe dog dok dol doo dor drc drd dre drg drk drl dro drr ec- ecc ecd ece ecg eck ecl eco ecr ed- edc edd ede edg edk edl edo edr eec eed eee eeg eek eel eeo eer egc egd ege egg egl ego egr ekc ekd eke ekg ekl eko ekr elc eld ele elg elk ell elo elr eo- eoc eod eoe eog eok eol eoo eor erc erd ere erg erk erl ero err g-d gcc gcd gce gcg gck gcl gco gcr gdc gdd gde gdk gdl gdo gdr ge- gec ged gee geg gek gel geo ger ggc ggd ggg ggo ggr gkd gko glc gld gle glg glk gll glo glr goc god goe gog gok gol goo gor grc grd gre grg grk grl gro grr kcc kcd kce kcg kck kcl kcr kdc kde kdg kdk kdl kdo kdr ke- kec ked kee keg kek kel keo ker kgc kgd kgl kgo kkc kke kkk kkl kkr kl- klc kld klg klo klr koc kod koe kog kok kol koo kor krc krd krg krk krl kro krr lcc lcd lce lcg lck lcl lco lcr ldc ldd lde ldg ldk ldl ldo ldr lec led lee leg lek lel leo ler lgc lgd lge lgg lgk lgl lgo lgr lkg lkl lkr llc lld lle llg llk lll llo llr loc lod loe log lok lol loo lor lrc lrd lrg lrk lro lrr oc- occ ocd ocg ock ocl oco ocr odc odd ode odg odl odo odr oec oed oee oeg oel oeo oer ogc ogd oge ogg ogl ogo okc okd oke okg okk okl oko okr olc old ole olg olk oll olo oo- ooc ood oog ook ool ooo oor or- orc ord ore org ork orl oro orr rcc rcd rce rcg rcl rco rcr rdc rdd rde rdg rdl rdo rdr re- rec red ree reg rek rel reo rer rgc rgd rge rgg rgk rgo rgr rkc rke rkg rkk rko rlc rld rle rlg rll rlo rlr roc rod roe rog rok rol roo ror rrc rrd rrg rrk rrl rrr