hfsli fhsli hsfli shfli fshli sfhli hflsi fhlsi hlfsi lhfsi flhsi lfhsi hslfi shlfi hlsfi lhsfi slhfi lshfi fslhi sflhi flshi lfshi slfhi lsfhi hfsil fhsil hsfil shfil fshil sfhil hfisl fhisl hifsl ihfsl fihsl ifhsl hsifl shifl hisfl ihsfl sihfl ishfl fsihl sfihl fishl ifshl sifhl isfhl hflis fhlis hlfis lhfis flhis lfhis hfils fhils hifls ihfls fihls ifhls hlifs lhifs hilfs ihlfs lihfs ilhfs flihs lfihs filhs iflhs lifhs ilfhs hslif shlif hlsif lhsif slhif lshif hsilf shilf hislf ihslf sihlf ishlf hlisf lhisf hilsf ihlsf lihsf ilhsf slihf lsihf silhf islhf lishf ilshf fslih sflih flsih lfsih slfih lsfih fsilh sfilh fislh ifslh siflh isflh flish lfish filsh iflsh lifsh ilfsh slifh lsifh silfh islfh lisfh ilsfh
Note: these 'words' (valid or invalid) are all the permutations of the word hfsli. These words are obtained by scrambling the letters in hfsli.