fmmt mfmt fmmt mfmt mmft mmft fmtm mftm ftmm tfmm mtfm tmfm fmtm mftm ftmm tfmm mtfm tmfm mmtf mmtf mtmf tmmf mtmf tmmf
Note: these 'words' (valid or invalid) are all the permutations of the word fmmt. These words are obtained by scrambling the letters in fmmt.