erres reres erres reres rrees rrees erers reers eerrs eerrs reers erers erers reers eerrs eerrs reers erers rrees rrees reres erres reres erres errse rerse errse rerse rrese rrese ersre resre esrre serre rsere srere ersre resre esrre serre rsere srere rrsee rrsee rsree srree rsree srree eresr reesr eersr eersr reesr eresr erser reser esrer serer rseer sreer eesrr eesrr eserr seerr eserr seerr reser erser rseer sreer esrer serer eresr reesr eersr eersr reesr eresr erser reser esrer serer rseer sreer eesrr eesrr eserr seerr eserr seerr reser erser rseer sreer esrer serer rrese rrese rerse errse rerse errse rrsee rrsee rsree srree rsree srree resre ersre rsere srere esrre serre resre ersre rsere srere esrre serre
Note: these 'words' (valid or invalid) are all the permutations of the word erres. These words are obtained by scrambling the letters in erres.