error reror error reror rreor rreor erorr reorr eorrr oerrr roerr orerr erorr reorr eorrr oerrr roerr orerr rroer rroer rorer orrer rorer orrer errro rerro errro rerro rrero rrero errro rerro errro rerro rrero rrero errro rerro errro rerro rrero rrero rrreo rrreo rrreo rrreo rrreo rrreo erorr reorr eorrr oerrr roerr orerr error reror error reror rreor rreor eorrr oerrr erorr reorr orerr roerr rorer orrer rroer rroer orrer rorer erorr reorr eorrr oerrr roerr orerr error reror error reror rreor rreor eorrr oerrr erorr reorr orerr roerr rorer orrer rroer rroer orrer rorer rrore rrore rorre orrre rorre orrre rrroe rrroe rrroe rrroe rrroe rrroe rorre orrre rrore rrore orrre rorre rorre orrre rrore rrore orrre rorre
Note: these 'words' (valid or invalid) are all the permutations of the word error. These words are obtained by scrambling the letters in error.