felty eflty flety lfety elfty lefty fetly eftly ftely tfely etfly tefly fltey lftey ftley tfley ltfey tlfey eltfy letfy etlfy telfy ltefy tlefy felyt eflyt fleyt lfeyt elfyt lefyt feylt efylt fyelt yfelt eyflt yeflt flyet lfyet fylet yflet lyfet ylfet elyft leyft eylft yelft lyeft yleft fetyl eftyl fteyl tfeyl etfyl tefyl feytl efytl fyetl yfetl eyftl yeftl ftyel tfyel fytel yftel tyfel ytfel etyfl teyfl eytfl yetfl tyefl ytefl fltye lftye ftlye tflye ltfye tlfye flyte lfyte fylte yflte lyfte ylfte ftyle tfyle fytle yftle tyfle ytfle ltyfe tlyfe lytfe yltfe tylfe ytlfe eltyf letyf etlyf telyf lteyf tleyf elytf leytf eyltf yeltf lyetf yletf etylf teylf eytlf yetlf tyelf ytelf ltyef tlyef lytef yltef tylef ytlef
Note: these 'words' (valid or invalid) are all the permutations of the word felty. These words are obtained by scrambling the letters in felty.