sneap nseap senap esnap nesap ensap snaep nsaep sanep asnep nasep ansep seanp esanp saenp asenp easnp aesnp neasp enasp naesp anesp eansp aensp snepa nsepa senpa esnpa nespa enspa snpea nspea spnea psnea npsea pnsea sepna espna spena psena epsna pesna nepsa enpsa npesa pnesa epnsa pensa snape nsape sanpe asnpe naspe anspe snpae nspae spnae psnae npsae pnsae sapne aspne spane psane apsne pasne napse anpse npase pnase apnse panse seapn esapn saepn asepn easpn aespn sepan espan spean psean epsan pesan sapen aspen spaen psaen apsen pasen eapsn aepsn epasn peasn apesn paesn neaps enaps naeps aneps eanps aenps nepas enpas npeas pneas epnas penas napes anpes npaes pnaes apnes panes eapns aepns epans peans apens paens
Note: these 'words' (valid or invalid) are all the permutations of the word sneap. These words are obtained by scrambling the letters in sneap.