-er -ic -ol c-- ccc cce ccg cci cck ccl cco ccr ce- cec cee ceg cei cek cel ceo cer cgc cge cgg cgi cgl cgo cgr ci- cic cie cig cii cik cil cio cir ckc cki cko cl- clc cle clg cli clk cll clo clr co- coc coe cog coi cok col coo cor crc cre crg cri crk crl cro crr ec- ecc ece ecg eci eck ecl eco ecr eec eee eeg eek eel eeo eer egc ege egg egi egl ego egr eic eie eig eii eik eil eio eir ekc eke ekg eki ekl eko ekr elc ele elg eli elk ell elo elr eo- eoc eoe eog eoi eok eol eoo eor erc ere erg eri erk erl ero err gcc gce gcg gci gck gcl gco gcr ge- gec gee geg gei gek gel geo ger ggc ggg ggi ggo ggr gic gie gig gii gik gil gio gir gko glc gle glg gli glk gll glo glr goc goe gog goi gok gol goo gor grc gre grg gri grk grl gro grr icc ice icg ici ick icl ico icr ie- iec iee ieg iei iek iel ier igc ige igg igi igk igl igo igr iic iie iii iil iio iir ikc ike iki ikk ikl iko ikr il- ilc ile ilg ili ilk ill ilo ilr io- ioc ioe iog ioi iol ioo ior ir- irc ire irg iri irk irl iro irr kcc kce kcg kci kck kcl kcr ke- kec kee keg kei kek kel keo ker kgc kgi kgl kgo kic kie kig kii kik kil kio kir kkc kke kki kkk kkl kkr kl- klc klg kli klo klr koc koe kog koi kok kol koo kor krc krg kri krk krl kro krr lcc lce lcg lci lck lcl lco lcr lec lee leg lei lek lel leo ler lgc lge lgg lgi lgk lgl lgo lgr lic lie lig lii lik lil lio lir lkg lkl lkr llc lle llg lli llk lll llo llr loc loe log loi lok lol loo lor lrc lrg lri lrk lro lrr o-i oc- occ ocg oci ock ocl oco ocr oec oee oeg oei oel oeo oer ogc oge ogg ogi ogl ogo oic oie oii oik oil oio oir okc oke okg oki okk okl oko okr olc ole olg oli olk oll olo oo- ooc oog ooi ook ool ooo oor or- orc ore org ori ork orl oro orr rcc rce rcg rci rcl rco rcr re- rec ree reg rei rek rel reo rer rgc rge rgg rgi rgk rgo rgr ric rie rig rii rik ril rio rir rkc rke rkg rkk rko rlc rle rlg rli rll rlo rlr roc roe rog roi rok rol roo ror rrc rrg rri rrk rrl rrr