erodr reodr eordr oerdr roedr oredr erdor redor edror deror rdeor dreor eodrr oedrr edorr deorr oderr doerr roder order rdoer droer odrer dorer erord reord eorrd oerrd roerd orerd errod rerod errod rerod rreod rreod eorrd oerrd erord reord orerd roerd rored orred rroed rroed orred rored erdro redro edrro derro rdero drero errdo rerdo errdo rerdo rredo rredo edrro derro erdro redro drero rdero rdreo drreo rrdeo rrdeo drreo rdreo eodrr oedrr edorr deorr oderr doerr eordr oerdr erodr reodr oredr roedr edror deror erdor redor dreor rdeor odrer dorer order roder droer rdoer rodre ordre rdore drore odrre dorre rorde orrde rrode rrode orrde rorde rdroe drroe rrdoe rrdoe drroe rdroe odrre dorre ordre rodre drore rdore
Note: these 'words' (valid or invalid) are all the permutations of the word erodr. These words are obtained by scrambling the letters in erodr.