-ol eee eef eel eem eeo ef- efe eff efl efm efo ele elf ell elm elo em- eme emf eml emm emo eo- eoe eof eol eom eoo fee fef fel fem feo ffe fff ffl ffm ffo fle flf fll flm flo fme fmf fml fmm fmo foe fof fol fom foo lee lef lel lem leo lfe lff lfl lfm lfo lle llf lll llm llo lme lmf lml lmm lmo loe lof lol lom loo m-f m-o mee mef mel mem meo mfe mff mfl mfm mfo mle mlf mll mlm mlo mme mmf mml mmm mmo moe mof mol mom moo oee oef oel oem oeo of- ofe off ofl ofm ofo ole olf oll olm olo om- ome omf oml omm omo oo- oof ool oom ooo