ipenn pienn iepnn eipnn peinn epinn ipnen pinen inpen nipen pnien npien ienpn einpn inepn niepn enipn neipn penin epnin pnein npein enpin nepin ipenn pienn iepnn eipnn peinn epinn ipnen pinen inpen nipen pnien npien ienpn einpn inepn niepn enipn neipn penin epnin pnein npein enpin nepin ipnne pinne inpne nipne pnine npine ipnne pinne inpne nipne pnine npine innpe ninpe innpe ninpe nnipe nnipe pnnie npnie pnnie npnie nnpie nnpie iennp einnp inenp nienp eninp neinp iennp einnp inenp nienp eninp neinp innep ninep innep ninep nniep nniep ennip nenip ennip nenip nneip nneip penni epnni pneni npeni enpni nepni penni epnni pneni npeni enpni nepni pnnei npnei pnnei npnei nnpei nnpei ennpi nenpi ennpi nenpi nnepi nnepi
Note: these 'words' (valid or invalid) are all the permutations of the word ipenn. These words are obtained by scrambling the letters in ipenn.