-er -ic -ol c-- ccc cce ccf cci cck ccl cco ccr ce- cec cee cef cei cek cel ceo cer cfc cfe cff cfi cfk cfl cfo cfr ci- cic cie cif cii cik cil cio cir ckc cki cko cl- clc cle clf cli clk cll clo clr co- coc coe cof coi cok col coo cor crc cre crf cri crk crl cro crr ec- ecc ece ecf eci eck ecl eco ecr eec eee eef eek eel eeo eer ef- efc efe eff efi efl efo efr eic eie eif eii eik eil eio eir ekc eke ekf eki ekl eko ekr elc ele elf eli elk ell elo elr eo- eoc eoe eof eoi eok eol eoo eor erc ere erf eri erk erl ero err fcc fce fcf fci fck fcl fco fcr fec fee fef fei fek fel feo fer ffc ffe fff ffi ffk ffl ffo ffr fic fie fif fii fik fil fir fkc fkf fki fkk fkl flc fle flf fli fll flo flr foc foe fof foi fok fol foo for frc fre frf fri frk frl fro frr i-f icc ice icf ici ick icl ico icr ie- iec iee ief iei iek iel ier ifc ife iff ifi ifl ifo ifr iic iie iif iii iil iio iir ikc ike ikf iki ikk ikl iko ikr il- ilc ile ilf ili ilk ill ilo ilr io- ioc ioe iof ioi iol ioo ior ir- irc ire irf iri irk irl iro irr kcc kce kci kck kcl kcr ke- kec kee kef kei kek kel keo ker kfc kff kfi kfo kic kie kif kii kik kil kio kir kkc kke kki kkk kkl kkr kl- klc klf kli klo klr koc koe kof koi kok kol koo kor krc krf kri krk krl kro krr lcc lce lcf lci lck lcl lco lcr lec lee lef lei lek lel leo ler lfc lfe lff lfi lfk lfl lfo lfr lic lie lif lii lik lil lio lir lkl lkr llc lle llf lli llk lll llo llr loc loe lof loi lok lol loo lor lrc lrf lri lrk lro lrr o-i oc- occ ocf oci ock ocl oco ocr oec oee oef oei oel oeo oer of- ofc ofe off ofi ofl ofo ofr oic oie oif oii oik oil oio oir okc oke oki okk okl oko okr olc ole olf oli olk oll olo oo- ooc oof ooi ook ool ooo oor or- orc ore orf ori ork orl oro orr rcc rce rcf rci rcl rco rcr re- rec ree ref rei rek rel reo rer rfc rfe rff rfi rfk rfl rfo rfr ric rie rif rii rik ril rio rir rkc rke rkf rkk rko rlc rle rlf rli rll rlo rlr roc roe rof roi rok rol roo ror rrc rrf rri rrk rrl rrr