ranid arnid rnaid nraid anrid narid raind arind riand irand airnd iarnd rniad nriad rinad irnad nirad inrad anird naird ainrd ianrd niard inard randi arndi rnadi nradi anrdi nardi radni ardni rdani drani adrni darni rndai nrdai rdnai drnai ndrai dnrai andri nadri adnri danri ndari dnari raidn aridn riadn iradn airdn iardn radin ardin rdain drain adrin darin ridan irdan rdian drian idran diran aidrn iadrn adirn dairn idarn diarn rnida nrida rinda irnda nirda inrda rndia nrdia rdnia drnia ndria dnria ridna irdna rdina drina idrna dirna nidra indra ndira dnira idnra dinra anidr naidr aindr iandr niadr inadr andir nadir adnir danir ndair dnair aidnr iadnr adinr dainr idanr dianr nidar indar ndiar dniar idnar dinar
Note: these 'words' (valid or invalid) are all the permutations of the word ranid. These words are obtained by scrambling the letters in ranid.