-er -ol c-- ccc cce ccg cck ccl ccn cco ccr ce- cec cee ceg cek cel cen ceo cer cgc cge cgg cgl cgn cgo cgr ckc cko cl- clc cle clg clk cll cln clo clr cn- cnc cne cng cnl cnn cno cnr co- coc coe cog cok col con coo cor crc cre crg crk crl crn cro crr ec- ecc ece ecg eck ecl ecn eco ecr eec eee eeg eek eel een eeo eer egc ege egg egl egn ego egr ekc eke ekg ekl eko ekr elc ele elg elk ell eln elo elr en- enc ene eng enk enl enn eno enr eo- eoc eoe eog eok eol eon eoo eor erc ere erg erk erl ern ero err gcc gce gcg gck gcl gcn gco gcr ge- gec gee geg gek gel gen geo ger ggc ggg ggn ggo ggr gkn gko glc gle glg glk gll gln glo glr gnc gne gnl gnn gno gnr goc goe gog gok gol gon goo gor grc gre grg grk grl grn gro grr kcc kce kcg kck kcl kcn kcr ke- kec kee keg kek kel ken keo ker kgc kgl kgo kkc kke kkk kkl kkn kkr kl- klc klg klo klr kn- knc kne kng knk knl knn kno knr koc koe kog kok kol kon koo kor krc krg krk krl krn kro krr lcc lce lcg lck lcl lcn lco lcr lec lee leg lek lel len leo ler lgc lge lgg lgk lgl lgn lgo lgr lkg lkl lkr llc lle llg llk lll lln llo llr lnc lne lng lnk lnl lnn lno lnr loc loe log lok lol lon loo lor lrc lrg lrk lrn lro lrr ncc nce ncg nck ncl ncn nco ncr ne- nec nee neg nek nel nen neo ner ngc nge ngg ngk ngl ngn ngo nkc nke nkk nkn nko nkr nlc nle nlg nlk nll nln nlo nlr nnc nne nng nnk nnl nnn nno no- noc noe nog nok nol non noo nor nrc nre nrg nrk nrl nrn nro nrr oc- occ ocg ock ocl ocn oco ocr oec oee oeg oel oen oeo oer ogc oge ogg ogl ogn ogo okc oke okg okk okl oko okr olc ole olg olk oll oln olo on- onc one ong onk onl onn ono onr oo- ooc oog ook ool oon ooo oor or- orc ore org ork orl orn oro orr rcc rce rcg rcl rcn rco rcr re- rec ree reg rek rel ren reo rer rgc rge rgg rgk rgn rgo rgr rkc rke rkg rkk rko rlc rle rlg rll rln rlo rlr rnc rng rnn rno rnr roc roe rog rok rol ron roo ror rrc rrg rrk rrl rrn rrr