flcl lfcl fcll cfll lcfl clfl fllc lflc fllc lflc llfc llfc fcll cfll flcl lfcl clfl lcfl lclf cllf llcf llcf cllf lclf
Note: these 'words' (valid or invalid) are all the permutations of the word flcl. These words are obtained by scrambling the letters in flcl.