trust rtust turst utrst rutst urtst trsut rtsut tsrut strut rstut srtut tusrt utsrt tsurt sturt ustrt sutrt rustt urstt rsutt srutt usrtt surtt truts rtuts turts utrts rutts urtts trtus rttus ttrus ttrus rttus trtus tutrs uttrs tturs tturs uttrs tutrs rutts urtts rtuts truts utrts turts trstu rtstu tsrtu strtu rsttu srttu trtsu rttsu ttrsu ttrsu rttsu trtsu tstru sttru ttsru ttsru sttru tstru rsttu srttu rtstu trstu strtu tsrtu tustr utstr tsutr stutr usttr suttr tutsr uttsr ttusr ttusr uttsr tutsr tstur sttur ttsur ttsur sttur tstur usttr suttr utstr tustr stutr tsutr rustt urstt rsutt srutt usrtt surtt rutst urtst rtust trust utrst turst rstut srtut rtsut trsut strut tsrut ustrt sutrt utsrt tusrt sturt tsurt
Note: these 'words' (valid or invalid) are all the permutations of the word trust. These words are obtained by scrambling the letters in trust.