felch eflch flech lfech elfch lefch feclh efclh fcelh cfelh ecflh ceflh flceh lfceh fcleh cfleh lcfeh clfeh elcfh lecfh eclfh celfh lcefh clefh felhc eflhc flehc lfehc elfhc lefhc fehlc efhlc fhelc hfelc ehflc heflc flhec lfhec fhlec hflec lhfec hlfec elhfc lehfc ehlfc helfc lhefc hlefc fechl efchl fcehl cfehl ecfhl cefhl fehcl efhcl fhecl hfecl ehfcl hefcl fchel cfhel fhcel hfcel chfel hcfel echfl cehfl ehcfl hecfl chefl hcefl flche lfche fclhe cflhe lcfhe clfhe flhce lfhce fhlce hflce lhfce hlfce fchle cfhle fhcle hfcle chfle hcfle lchfe clhfe lhcfe hlcfe chlfe hclfe elchf lechf eclhf celhf lcehf clehf elhcf lehcf ehlcf helcf lhecf hlecf echlf cehlf ehclf heclf chelf hcelf lchef clhef lhcef hlcef chlef hclef
Note: these 'words' (valid or invalid) are all the permutations of the word felch. These words are obtained by scrambling the letters in felch.