prent rpent pernt eprnt repnt erpnt prnet rpnet pnret npret rnpet nrpet penrt epnrt pnert npert enprt neprt renpt ernpt rnept nrept enrpt nerpt pretn rpetn pertn eprtn reptn erptn prten rpten ptren tpren rtpen trpen petrn eptrn ptern tpern etprn teprn retpn ertpn rtepn trepn etrpn terpn prnte rpnte pnrte nprte rnpte nrpte prtne rptne ptrne tprne rtpne trpne pntre nptre ptnre tpnre ntpre tnpre rntpe nrtpe rtnpe trnpe ntrpe tnrpe pentr epntr pnetr npetr enptr neptr petnr eptnr ptenr tpenr etpnr tepnr pnter npter ptner tpner ntper tnper entpr netpr etnpr tenpr ntepr tnepr rentp erntp rnetp nretp enrtp nertp retnp ertnp rtenp trenp etrnp ternp rntep nrtep rtnep trnep ntrep tnrep entrp netrp etnrp tenrp nterp tnerp
Note: these 'words' (valid or invalid) are all the permutations of the word prent. These words are obtained by scrambling the letters in prent.