plesh lpesh pelsh eplsh lepsh elpsh plseh lpseh psleh spleh lspeh slpeh peslh epslh pselh spelh esplh seplh lesph elsph lseph sleph eslph selph plehs lpehs pelhs eplhs lephs elphs plhes lphes phles hples lhpes hlpes pehls ephls phels hpels ehpls hepls lehps elhps lheps hleps ehlps helps plshe lpshe pslhe splhe lsphe slphe plhse lphse phlse hplse lhpse hlpse pshle sphle phsle hpsle shple hsple lshpe slhpe lhspe hlspe shlpe hslpe peshl epshl psehl spehl esphl sephl pehsl ephsl phesl hpesl ehpsl hepsl pshel sphel phsel hpsel shpel hspel eshpl sehpl ehspl hespl shepl hsepl leshp elshp lsehp slehp eslhp selhp lehsp elhsp lhesp hlesp ehlsp helsp lshep slhep lhsep hlsep shlep hslep eshlp sehlp ehslp heslp shelp hselp
Note: these 'words' (valid or invalid) are all the permutations of the word plesh. These words are obtained by scrambling the letters in plesh.