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