penis epnis pneis npeis enpis nepis peins epins piens ipens eipns iepns pnies npies pines ipnes nipes inpes enips neips einps ienps nieps ineps pensi epnsi pnesi npesi enpsi nepsi pesni epsni pseni speni espni sepni pnsei npsei psnei spnei nspei snpei enspi nespi esnpi senpi nsepi snepi peisn episn piesn ipesn eipsn iepsn pesin epsin psein spein espin sepin pisen ipsen psien spien ispen sipen eispn iespn esipn seipn isepn siepn pnise npise pinse ipnse nipse inpse pnsie npsie psnie spnie nspie snpie pisne ipsne psine spine ispne sipne nispe inspe nsipe snipe isnpe sinpe enisp neisp einsp iensp niesp inesp ensip nesip esnip senip nseip sneip eisnp iesnp esinp seinp isenp sienp nisep insep nsiep sniep isnep sinep
Note: these 'words' (valid or invalid) are all the permutations of the word penis. These words are obtained by scrambling the letters in penis.