zippy izppy zpipy pzipy ipzpy pizpy zippy izppy zpipy pzipy ipzpy pizpy zppiy pzpiy zppiy pzpiy ppziy ppziy ippzy pipzy ippzy pipzy ppizy ppizy zipyp izpyp zpiyp pziyp ipzyp pizyp ziypp izypp zyipp yzipp iyzpp yizpp zpyip pzyip zypip yzpip pyzip ypzip ipyzp piyzp iypzp yipzp pyizp ypizp zipyp izpyp zpiyp pziyp ipzyp pizyp ziypp izypp zyipp yzipp iyzpp yizpp zpyip pzyip zypip yzpip pyzip ypzip ipyzp piyzp iypzp yipzp pyizp ypizp zppyi pzpyi zppyi pzpyi ppzyi ppzyi zpypi pzypi zyppi yzppi pyzpi ypzpi zpypi pzypi zyppi yzppi pyzpi ypzpi ppyzi ppyzi pypzi yppzi pypzi yppzi ippyz pipyz ippyz pipyz ppiyz ppiyz ipypz piypz iyppz yippz pyipz ypipz ipypz piypz iyppz yippz pyipz ypipz ppyiz ppyiz pypiz yppiz pypiz yppiz
Note: these 'words' (valid or invalid) are all the permutations of the word zippy. These words are obtained by scrambling the letters in zippy.