gults uglts gluts lguts ulgts lugts gutls ugtls gtuls tguls utgls tugls gltus lgtus gtlus tglus ltgus tlgus ultgs lutgs utlgs tulgs ltugs tlugs gulst uglst glust lgust ulgst lugst guslt ugslt gsult sgult usglt suglt glsut lgsut gslut sglut lsgut slgut ulsgt lusgt uslgt sulgt lsugt slugt gutsl ugtsl gtusl tgusl utgsl tugsl gustl ugstl gsutl sgutl usgtl sugtl gtsul tgsul gstul sgtul tsgul stgul utsgl tusgl ustgl sutgl tsugl stugl gltsu lgtsu gtlsu tglsu ltgsu tlgsu glstu lgstu gsltu sgltu lsgtu slgtu gtslu tgslu gstlu sgtlu tsglu stglu ltsgu tlsgu lstgu sltgu tslgu stlgu ultsg lutsg utlsg tulsg ltusg tlusg ulstg lustg usltg sultg lsutg slutg utslg tuslg ustlg sutlg tsulg stulg ltsug tlsug lstug sltug tslug stlug
Note: these 'words' (valid or invalid) are all the permutations of the word gults. These words are obtained by scrambling the letters in gults.