-er -ol c-- ccc cce ccf ccl ccm cco ccr ce- cec cee cef cel cem ceo cer cfc cfe cff cfl cfm cfo cfr cl- clc cle clf cll clm clo clr cmc cme cmf cml cmm cmo cmr co- coc coe cof col com coo cor crc cre crf crl crm cro crr ec- ecc ece ecf ecl ecm eco ecr eec eee eef eel eem eeo eer ef- efc efe eff efl efm efo efr elc ele elf ell elm elo elr em- emc eme emf eml emm emo emr eo- eoc eoe eof eol eom eoo eor erc ere erf erl erm ero err fcc fce fcf fcl fcm fco fcr fec fee fef fel fem feo fer ffc ffe fff ffl ffm ffo ffr flc fle flf fll flm flo flr fmc fme fmf fml fmm fmo fmr foc foe fof fol fom foo for frc fre frf frl frm fro frr lcc lce lcf lcl lcm lco lcr lec lee lef lel lem leo ler lfc lfe lff lfl lfm lfo lfr llc lle llf lll llm llo llr lmc lme lmf lml lmm lmo lmr loc loe lof lol lom loo lor lrc lrf lrm lro lrr m-f m-o m-r mc- mcc mce mcf mcl mcm mco mcr mec mee mef mel mem meo mer mfc mfe mff mfl mfm mfo mfr mlc mle mlf mll mlm mlo mlr mmc mme mmf mml mmm mmo mmr moc moe mof mol mom moo mor mrc mre mrf mrl mrm mro mrr oc- occ ocf ocl ocm oco ocr oec oee oef oel oem oeo oer of- ofc ofe off ofl ofm ofo ofr olc ole olf oll olm olo om- omc ome omf oml omm omo omr oo- ooc oof ool oom ooo oor or- orc ore orf orl orm oro orr rcc rce rcf rcl rcm rco rcr re- rec ree ref rel rem reo rer rfc rfe rff rfl rfm rfo rfr rlc rle rlf rll rlm rlo rlr rmc rme rmf rml rmm rmo rmr roc roe rof rol rom roo ror rrc rrf rrl rrm rrr