meffs emffs mfefs fmefs efmfs femfs meffs emffs mfefs fmefs efmfs femfs mffes fmfes mffes fmfes ffmes ffmes effms fefms effms fefms ffems ffems mefsf emfsf mfesf fmesf efmsf femsf mesff emsff mseff smeff esmff semff mfsef fmsef msfef smfef fsmef sfmef efsmf fesmf esfmf sefmf fsemf sfemf mefsf emfsf mfesf fmesf efmsf femsf mesff emsff mseff smeff esmff semff mfsef fmsef msfef smfef fsmef sfmef efsmf fesmf esfmf sefmf fsemf sfemf mffse fmfse mffse fmfse ffmse ffmse mfsfe fmsfe msffe smffe fsmfe sfmfe mfsfe fmsfe msffe smffe fsmfe sfmfe ffsme ffsme fsfme sffme fsfme sffme effsm fefsm effsm fefsm ffesm ffesm efsfm fesfm esffm seffm fsefm sfefm efsfm fesfm esffm seffm fsefm sfefm ffsem ffsem fsfem sffem fsfem sffem
Note: these 'words' (valid or invalid) are all the permutations of the word meffs. These words are obtained by scrambling the letters in meffs.