frill rfill firll ifrll rifll irfll frlil rflil flril lfril rlfil lrfil filrl iflrl flirl lfirl ilfrl lifrl rilfl irlfl rlifl lrifl ilrfl lirfl frill rfill firll ifrll rifll irfll frlil rflil flril lfril rlfil lrfil filrl iflrl flirl lfirl ilfrl lifrl rilfl irlfl rlifl lrifl ilrfl lirfl frlli rflli flrli lfrli rlfli lrfli frlli rflli flrli lfrli rlfli lrfli fllri lflri fllri lflri llfri llfri rllfi lrlfi rllfi lrlfi llrfi llrfi fillr ifllr flilr lfilr ilflr liflr fillr ifllr flilr lfilr ilflr liflr fllir lflir fllir lflir llfir llfir illfr lilfr illfr lilfr llifr llifr rillf irllf rlilf lrilf ilrlf lirlf rillf irllf rlilf lrilf ilrlf lirlf rllif lrlif rllif lrlif llrif llrif illrf lilrf illrf lilrf llirf llirf
Note: these 'words' (valid or invalid) are all the permutations of the word frill. These words are obtained by scrambling the letters in frill.