rusty ursty rsuty sruty usrty surty rutsy urtsy rtusy trusy utrsy tursy rstuy srtuy rtsuy trsuy struy tsruy ustry sutry utsry tusry stury tsury rusyt ursyt rsuyt sruyt usryt suryt ruyst uryst ryust yrust uyrst yurst rsyut sryut rysut yrsut syrut ysrut usyrt suyrt uysrt yusrt syurt ysurt rutys urtys rtuys truys utrys turys ruyts uryts ryuts yruts uyrts yurts rtyus tryus rytus yrtus tyrus ytrus utyrs tuyrs uytrs yutrs tyurs yturs rstyu srtyu rtsyu trsyu stryu tsryu rsytu srytu rystu yrstu syrtu ysrtu rtysu trysu rytsu yrtsu tyrsu ytrsu styru tsyru sytru ystru tysru ytsru ustyr sutyr utsyr tusyr stuyr tsuyr usytr suytr uystr yustr syutr ysutr utysr tuysr uytsr yutsr tyusr ytusr styur tsyur sytur ystur tysur ytsur
Note: these 'words' (valid or invalid) are all the permutations of the word rusty. These words are obtained by scrambling the letters in rusty.