smlif mslif slmif lsmif mlsif lmsif smilf msilf simlf ismlf mislf imslf slimf lsimf silmf islmf lismf ilsmf mlisf lmisf milsf imlsf limsf ilmsf smlfi mslfi slmfi lsmfi mlsfi lmsfi smfli msfli sfmli fsmli mfsli fmsli slfmi lsfmi sflmi fslmi lfsmi flsmi mlfsi lmfsi mflsi fmlsi lfmsi flmsi smifl msifl simfl ismfl misfl imsfl smfil msfil sfmil fsmil mfsil fmsil sifml isfml sfiml fsiml ifsml fisml mifsl imfsl mfisl fmisl ifmsl fimsl slifm lsifm silfm islfm lisfm ilsfm slfim lsfim sflim fslim lfsim flsim siflm isflm sfilm fsilm ifslm fislm lifsm ilfsm lfism flism iflsm filsm mlifs lmifs milfs imlfs limfs ilmfs mlfis lmfis mflis fmlis lfmis flmis mifls imfls mfils fmils ifmls fimls lifms ilfms lfims flims iflms films
Note: these 'words' (valid or invalid) are all the permutations of the word smlif. These words are obtained by scrambling the letters in smlif.