ailfl ialfl alifl laifl ilafl liafl aifll iafll afill faill ifall fiall alfil lafil aflil falil lfail flail ilfal lifal iflal filal lfial flial aillf iallf alilf lailf ilalf lialf aillf iallf alilf lailf ilalf lialf allif lalif allif lalif llaif llaif illaf lilaf illaf lilaf lliaf lliaf aifll iafll afill faill ifall fiall ailfl ialfl alifl laifl ilafl liafl aflil falil alfil lafil flail lfail iflal filal ilfal lifal flial lfial alfli lafli aflli falli lfali flali allfi lalfi allfi lalfi llafi llafi aflli falli alfli lafli flali lfali lflai fllai llfai llfai fllai lflai ilfla lifla iflla filla lfila flila illfa lilfa illfa lilfa llifa llifa iflla filla ilfla lifla flila lfila lflia fllia llfia llfia fllia lflia
Note: these 'words' (valid or invalid) are all the permutations of the word ailfl. These words are obtained by scrambling the letters in ailfl.