nippy inppy npipy pnipy ipnpy pinpy nippy inppy npipy pnipy ipnpy pinpy nppiy pnpiy nppiy pnpiy ppniy ppniy ippny pipny ippny pipny ppiny ppiny nipyp inpyp npiyp pniyp ipnyp pinyp niypp inypp nyipp ynipp iynpp yinpp npyip pnyip nypip ynpip pynip ypnip ipynp piynp iypnp yipnp pyinp ypinp nipyp inpyp npiyp pniyp ipnyp pinyp niypp inypp nyipp ynipp iynpp yinpp npyip pnyip nypip ynpip pynip ypnip ipynp piynp iypnp yipnp pyinp ypinp nppyi pnpyi nppyi pnpyi ppnyi ppnyi npypi pnypi nyppi ynppi pynpi ypnpi npypi pnypi nyppi ynppi pynpi ypnpi ppyni ppyni pypni yppni pypni yppni ippyn pipyn ippyn pipyn ppiyn ppiyn ipypn piypn iyppn yippn pyipn ypipn ipypn piypn iyppn yippn pyipn ypipn ppyin ppyin pypin yppin pypin yppin
Note: these 'words' (valid or invalid) are all the permutations of the word nippy. These words are obtained by scrambling the letters in nippy.