nines innes nnies nnies innes nines niens inens neins enins ienns einns nneis nneis nenis ennis nenis ennis inens niens ienns einns neins enins ninse innse nnise nnise innse ninse nisne insne nsine snine isnne sinne nnsie nnsie nsnie snnie nsnie snnie insne nisne isnne sinne nsine snine niesn inesn neisn enisn iensn einsn nisen insen nsien snien isnen sinen nesin ensin nsein snein esnin senin iesnn eisnn isenn sienn esinn seinn nnesi nnesi nensi ennsi nensi ennsi nnsei nnsei nsnei snnei nsnei snnei nesni ensni nseni sneni esnni senni nesni ensni nseni sneni esnni senni inesn niesn iensn einsn neisn enisn insen nisen isnen sinen nsien snien iesnn eisnn isenn sienn esinn seinn nesin ensin nsein snein esnin senin
Note: these 'words' (valid or invalid) are all the permutations of the word nines. These words are obtained by scrambling the letters in nines.