flour lfour folur oflur lofur olfur fluor lfuor fulor uflor lufor ulfor foulr ofulr fuolr ufolr ouflr uoflr loufr olufr luofr ulofr oulfr uolfr floru lforu folru oflru lofru olfru flrou lfrou frlou rflou lrfou rlfou forlu ofrlu frolu rfolu orflu roflu lorfu olrfu lrofu rlofu orlfu rolfu fluro lfuro fulro uflro lufro ulfro flruo lfruo frluo rfluo lrfuo rlfuo furlo ufrlo frulo rfulo urflo ruflo lurfo ulrfo lrufo rlufo urlfo rulfo fourl ofurl fuorl uforl oufrl uofrl forul ofrul froul rfoul orful roful furol ufrol fruol rfuol urfol rufol ourfl uorfl orufl roufl urofl ruofl lourf olurf luorf ulorf oulrf uolrf loruf olruf lrouf rlouf orluf roluf lurof ulrof lruof rluof urlof rulof ourlf uorlf orulf roulf urolf ruolf
Note: these 'words' (valid or invalid) are all the permutations of the word flour. These words are obtained by scrambling the letters in flour.