prute rpute purte uprte rupte urpte prtue rptue ptrue tprue rtpue trpue putre uptre pture tpure utpre tupre rutpe urtpe rtupe trupe utrpe turpe pruet rpuet puret upret rupet urpet preut rpeut perut eprut reput erput puert upert peurt epurt ueprt euprt ruept urept reupt erupt uerpt eurpt prteu rpteu ptreu tpreu rtpeu trpeu pretu rpetu pertu eprtu reptu erptu pteru tperu petru eptru tepru etpru rtepu trepu retpu ertpu terpu etrpu puter upter ptuer tpuer utper tuper puetr upetr peutr eputr ueptr euptr pteur tpeur petur eptur tepur etpur utepr tuepr uetpr eutpr teupr etupr rutep urtep rtuep truep utrep turep ruetp uretp reutp erutp uertp eurtp rteup treup retup ertup terup etrup uterp tuerp uetrp eutrp teurp eturp
Note: these 'words' (valid or invalid) are all the permutations of the word prute. These words are obtained by scrambling the letters in prute.