reses erses rsees srees esres seres reess eress reess eress eerss eerss rsees srees reses erses seres esres esers seers eesrs eesrs seers esers resse ersse rsese srese esrse serse resse ersse rsese srese esrse serse rssee srsee rssee srsee ssree ssree essre sesre essre sesre ssere ssere reess eress reess eress eerss eerss reses erses rsees srees esres seres reses erses rsees srees esres seres eesrs eesrs esers seers esers seers rsese srese resse ersse serse esrse rssee srsee rssee srsee ssree ssree resse ersse rsese srese esrse serse sesre essre ssere ssere essre sesre esesr seesr eessr eessr seesr esesr esser seser esser seser sseer sseer eessr eessr esesr seesr esesr seesr seser esser sseer sseer esser seser
Note: these 'words' (valid or invalid) are all the permutations of the word reses. These words are obtained by scrambling the letters in reses.