-er -ol c-- ccc cce cck ccl cco ccp ccr ce- cec cee cek cel ceo cep cer ckc cko cl- clc cle clk cll clo clp clr co- coc coe cok col coo cop cor cpc cpe cpk cpl cpo cpp cpr crc cre crk crl cro crp crr ec- ecc ece eck ecl eco ecr eec eee eek eel eeo eep eer ekc eke ekl eko ekp ekr elc ele elk ell elo elp elr eo- eoc eoe eok eol eoo eop eor ep- epc epe epl epo epp epr erc ere erk erl ero erp err kcc kce kck kcl kcp kcr ke- kec kee kek kel keo kep ker kkc kke kkk kkl kkp kkr kl- klc klo klr koc koe kok kol koo kop kor kpc kpe kpk kpl kpo kpp kpr krc krk krl kro krp krr l-p lcc lce lck lcl lco lcp lcr lec lee lek lel leo lep ler lkl lkp lkr llc lle llk lll llo llp llr loc loe lok lol loo lop lor lpc lpe lpk lpl lpo lpp lpr lrc lrk lro lrp lrr oc- occ ock ocl oco ocp ocr oec oee oel oeo oep oer okc oke okk okl oko okp okr olc ole olk oll olo olp oo- ooc ook ool ooo oop oor op- opc ope opk opl opo opp opr or- orc ore ork orl oro orp orr p-p pcc pce pck pcl pco pcp pcr pec pee pek pel peo pep per pkc pke pkl pko pkp pkr plc ple plk pll plo plp plr poc poe pok pol poo pop por ppc ppe ppk ppl ppo ppp ppr prc pre prk prl pro prp prr rcc rce rcl rco rcp rcr re- rec ree rek rel reo rep rer rkc rke rkk rko rkp rlc rle rll rlo rlp rlr roc roe rok rol roo rop ror rpc rpe rpk rpl rpo rpp rpr rrc rrk rrl rrp rrr