impse mipse ipmse pimse mpise pmise imspe mispe ismpe simpe msipe smipe ipsme pisme ispme sipme psime spime mpsie pmsie mspie smpie psmie spmie impes mipes ipmes pimes mpies pmies imeps mieps iemps eimps meips emips ipems piems iepms eipms peims epims mpeis pmeis mepis empis pemis epmis imsep misep ismep simep msiep smiep imesp miesp iemsp eimsp meisp emisp isemp siemp iesmp eismp seimp esimp mseip smeip mesip emsip semip esmip ipsem pisem ispem sipem psiem spiem ipesm piesm iepsm eipsm peism epism isepm siepm iespm eispm seipm esipm pseim speim pesim epsim sepim espim mpsei pmsei mspei smpei psmei spmei mpesi pmesi mepsi empsi pemsi epmsi msepi smepi mespi emspi sempi esmpi psemi spemi pesmi epsmi sepmi espmi
Note: these 'words' (valid or invalid) are all the permutations of the word impse. These words are obtained by scrambling the letters in impse.