prise rpise pirse iprse ripse irpse prsie rpsie psrie sprie rspie srpie pisre ipsre psire spire ispre sipre rispe irspe rsipe sripe isrpe sirpe pries rpies pires ipres ripes irpes preis rpeis peris epris repis erpis piers ipers peirs epirs ieprs eiprs rieps ireps reips erips ierps eirps prsei rpsei psrei sprei rspei srpei presi rpesi persi eprsi repsi erpsi pseri speri pesri epsri sepri espri rsepi srepi respi erspi serpi esrpi piser ipser psier spier isper siper piesr ipesr peisr episr iepsr eipsr pseir speir pesir epsir sepir espir isepr siepr iespr eispr seipr esipr risep irsep rsiep sriep isrep sirep riesp iresp reisp erisp iersp eirsp rseip sreip resip ersip serip esrip iserp sierp iesrp eisrp seirp esirp
Note: these 'words' (valid or invalid) are all the permutations of the word prise. These words are obtained by scrambling the letters in prise.