fleur lfeur felur eflur lefur elfur fluer lfuer fuler ufler lufer ulfer feulr efulr fuelr ufelr euflr ueflr leufr elufr luefr ulefr eulfr uelfr fleru lferu felru eflru lefru elfru flreu lfreu frleu rfleu lrfeu rlfeu ferlu efrlu frelu rfelu erflu reflu lerfu elrfu lrefu rlefu erlfu relfu flure lfure fulre uflre lufre ulfre flrue lfrue frlue rflue lrfue rlfue furle ufrle frule rfule urfle rufle lurfe ulrfe lrufe rlufe urlfe rulfe feurl efurl fuerl uferl eufrl uefrl ferul efrul freul rfeul erful reful furel ufrel fruel rfuel urfel rufel eurfl uerfl erufl reufl urefl ruefl leurf elurf luerf ulerf eulrf uelrf leruf elruf lreuf rleuf erluf reluf luref ulref lruef rluef urlef rulef eurlf uerlf erulf reulf urelf ruelf
Note: these 'words' (valid or invalid) are all the permutations of the word fleur. These words are obtained by scrambling the letters in fleur.