flout lfout folut oflut lofut olfut fluot lfuot fulot uflot lufot ulfot foult ofult fuolt ufolt ouflt uoflt louft oluft luoft uloft oulft uolft flotu lfotu foltu ofltu loftu olftu fltou lftou ftlou tflou ltfou tlfou fotlu oftlu ftolu tfolu otflu toflu lotfu oltfu ltofu tlofu otlfu tolfu fluto lfuto fulto uflto lufto ulfto fltuo lftuo ftluo tfluo ltfuo tlfuo futlo uftlo ftulo tfulo utflo tuflo lutfo ultfo ltufo tlufo utlfo tulfo foutl ofutl fuotl ufotl ouftl uoftl fotul oftul ftoul tfoul otful toful futol uftol ftuol tfuol utfol tufol outfl uotfl otufl toufl utofl tuofl loutf olutf luotf ulotf oultf uoltf lotuf oltuf ltouf tlouf otluf toluf lutof ultof ltuof tluof utlof tulof outlf uotlf otulf toulf utolf tuolf
Note: these 'words' (valid or invalid) are all the permutations of the word flout. These words are obtained by scrambling the letters in flout.