thure hture tuhre uthre hutre uhtre thrue htrue trhue rthue hrtue rhtue turhe utrhe truhe rtuhe urthe ruthe hurte uhrte hrute rhute urhte ruhte thuer htuer tuher uther huter uhter theur hteur tehur ethur hetur ehtur tuehr utehr teuhr etuhr uethr euthr huetr uhetr heutr ehutr uehtr euhtr threu htreu trheu rtheu hrteu rhteu theru hteru tehru ethru hetru ehtru trehu rtehu terhu etrhu rethu erthu hretu rhetu hertu ehrtu rehtu erhtu tureh utreh trueh rtueh urteh ruteh tuerh uterh teurh eturh uetrh eutrh treuh rteuh teruh etruh retuh ertuh ureth rueth uerth eurth reuth eruth huret uhret hruet rhuet urhet ruhet huert uhert heurt ehurt uehrt euhrt hreut rheut herut ehrut rehut erhut ureht rueht uerht eurht reuht eruht
Note: these 'words' (valid or invalid) are all the permutations of the word thure. These words are obtained by scrambling the letters in thure.