-er -ol c-- ccc cce ccg cck ccl cco ccr ce- cec cee ceg cek cel ceo cer cgc cge cgg cgl cgo cgr ckc cko cl- clc cle clg clk cll clo clr co- coc coe cog cok col coo cor crc cre crg crk crl cro crr ec- ecc ece ecg eck ecl eco ecr eec eee eeg eek eel eeo eer egc ege egg egl ego egr ekc eke ekg ekl eko ekr elc ele elg elk ell elo elr eo- eoc eoe eog eok eol eoo eor erc ere erg erk erl ero err gcc gce gcg gck gcl gco gcr ge- gec gee geg gek gel geo ger ggc ggg ggo ggr gko glc gle glg glk gll glo glr goc goe gog gok gol goo gor grc gre grg grk grl gro grr kcc kce kcg kck kcl kcr ke- kec kee keg kek kel keo ker kgc kgl kgo kkc kke kkk kkl kkr kl- klc klg klo klr koc koe kog kok kol koo kor krc krg krk krl kro krr lcc lce lcg lck lcl lco lcr lec lee leg lek lel leo ler lgc lge lgg lgk lgl lgo lgr lkg lkl lkr llc lle llg llk lll llo llr loc loe log lok lol loo lor lrc lrg lrk lro lrr oc- occ ocg ock ocl oco ocr oec oee oeg oel oeo oer ogc oge ogg ogl ogo okc oke okg okk okl oko okr olc ole olg olk oll olo oo- ooc oog ook ool ooo oor or- orc ore org ork orl oro orr rcc rce rcg rcl rco rcr re- rec ree reg rek rel reo rer rgc rge rgg rgk rgo rgr rkc rke rkg rkk rko rlc rle rlg rll rlo rlr roc roe rog rok rol roo ror rrc rrg rrk rrl rrr