reefy erefy reefy erefy eerfy eerfy refey erfey rfeey freey efrey ferey refey erfey rfeey freey efrey ferey eefry eefry efery feery efery feery reeyf ereyf reeyf ereyf eeryf eeryf reyef eryef ryeef yreef eyref yeref reyef eryef ryeef yreef eyref yeref eeyrf eeyrf eyerf yeerf eyerf yeerf refye erfye rfeye freye efrye ferye reyfe eryfe ryefe yrefe eyrfe yerfe rfyee fryee ryfee yrfee fyree yfree efyre feyre eyfre yefre fyere yfere refye erfye rfeye freye efrye ferye reyfe eryfe ryefe yrefe eyrfe yerfe rfyee fryee ryfee yrfee fyree yfree efyre feyre eyfre yefre fyere yfere eefyr eefyr efeyr feeyr efeyr feeyr eeyfr eeyfr eyefr yeefr eyefr yeefr efyer feyer eyfer yefer fyeer yfeer efyer feyer eyfer yefer fyeer yfeer
Note: these 'words' (valid or invalid) are all the permutations of the word reefy. These words are obtained by scrambling the letters in reefy.