gulls uglls gluls lguls ulgls lugls gulls uglls gluls lguls ulgls lugls gllus lglus gllus lglus llgus llgus ullgs lulgs ullgs lulgs llugs llugs gulsl uglsl glusl lgusl ulgsl lugsl gusll ugsll gsull sgull usgll sugll glsul lgsul gslul sglul lsgul slgul ulsgl lusgl uslgl sulgl lsugl slugl gulsl uglsl glusl lgusl ulgsl lugsl gusll ugsll gsull sgull usgll sugll glsul lgsul gslul sglul lsgul slgul ulsgl lusgl uslgl sulgl lsugl slugl gllsu lglsu gllsu lglsu llgsu llgsu glslu lgslu gsllu sgllu lsglu slglu glslu lgslu gsllu sgllu lsglu slglu llsgu llsgu lslgu sllgu lslgu sllgu ullsg lulsg ullsg lulsg llusg llusg ulslg luslg usllg sullg lsulg slulg ulslg luslg usllg sullg lsulg slulg llsug llsug lslug sllug lslug sllug
Note: these 'words' (valid or invalid) are all the permutations of the word gulls. These words are obtained by scrambling the letters in gulls.