nerdy enrdy nredy rnedy erndy rendy nedry endry ndery dnery ednry denry nrdey rndey ndrey dnrey rdney drney erdny redny edrny derny rdeny dreny neryd enryd nreyd rneyd ernyd renyd neyrd enyrd nyerd ynerd eynrd yenrd nryed rnyed nyred ynred ryned yrned erynd reynd eyrnd yernd ryend yrend nedyr endyr ndeyr dneyr ednyr denyr neydr enydr nyedr ynedr eyndr yendr ndyer dnyer nyder ynder dyner ydner edynr deynr eydnr yednr dyenr ydenr nrdye rndye ndrye dnrye rdnye drnye nryde rnyde nyrde ynrde rynde yrnde ndyre dnyre nydre yndre dynre ydnre rdyne dryne rydne yrdne dyrne ydrne erdyn redyn edryn deryn rdeyn dreyn erydn reydn eyrdn yerdn ryedn yredn edyrn deyrn eydrn yedrn dyern ydern rdyen dryen ryden yrden dyren ydren
Note: these 'words' (valid or invalid) are all the permutations of the word nerdy. These words are obtained by scrambling the letters in nerdy.