dreys rdeys derys edrys redys erdys dryes rdyes dyres ydres rydes yrdes deyrs edyrs dyers yders eydrs yedrs reyds eryds ryeds yreds eyrds yerds dresy rdesy dersy edrsy redsy erdsy drsey rdsey dsrey sdrey rsdey srdey desry edsry dsery sdery esdry sedry resdy ersdy rsedy sredy esrdy serdy dryse rdyse dyrse ydrse rydse yrdse drsye rdsye dsrye sdrye rsdye srdye dysre ydsre dsyre sdyre ysdre sydre rysde yrsde rsyde sryde ysrde syrde deysr edysr dyesr ydesr eydsr yedsr desyr edsyr dseyr sdeyr esdyr sedyr dyser ydser dsyer sdyer ysder syder eysdr yesdr esydr seydr ysedr syedr reysd erysd ryesd yresd eyrsd yersd resyd ersyd rseyd sreyd esryd seryd rysed yrsed rsyed sryed ysred syred eysrd yesrd esyrd seyrd yserd syerd
Note: these 'words' (valid or invalid) are all the permutations of the word dreys. These words are obtained by scrambling the letters in dreys.