gruby rguby gurby ugrby rugby urgby grbuy rgbuy gbruy bgruy rbguy brguy gubry ugbry gbury bgury ubgry bugry rubgy urbgy rbugy brugy ubrgy burgy gruyb rguyb guryb ugryb rugyb urgyb gryub rgyub gyrub ygrub rygub yrgub guyrb ugyrb gyurb ygurb uygrb yugrb ruygb urygb ryugb yrugb uyrgb yurgb grbyu rgbyu gbryu bgryu rbgyu brgyu grybu rgybu gyrbu ygrbu rygbu yrgbu gbyru bgyru gybru ygbru bygru ybgru rbygu brygu rybgu yrbgu byrgu ybrgu gubyr ugbyr gbuyr bguyr ubgyr bugyr guybr ugybr gyubr ygubr uygbr yugbr gbyur bgyur gybur ygbur bygur ybgur ubygr buygr uybgr yubgr byugr ybugr rubyg urbyg rbuyg bruyg ubryg buryg ruybg urybg ryubg yrubg uyrbg yurbg rbyug bryug rybug yrbug byrug ybrug ubyrg buyrg uybrg yubrg byurg yburg
Note: these 'words' (valid or invalid) are all the permutations of the word gruby. These words are obtained by scrambling the letters in gruby.