yards ayrds yrads ryads aryds rayds yadrs aydrs ydars dyars adyrs dayrs yrdas rydas ydras dyras rdyas dryas ardys radys adrys darys rdays drays yarsd ayrsd yrasd ryasd arysd raysd yasrd aysrd ysard syard asyrd sayrd yrsad rysad ysrad syrad rsyad sryad arsyd rasyd asryd saryd rsayd srayd yadsr aydsr ydasr dyasr adysr daysr yasdr aysdr ysadr syadr asydr saydr ydsar dysar ysdar sydar dsyar sdyar adsyr dasyr asdyr sadyr dsayr sdayr yrdsa rydsa ydrsa dyrsa rdysa drysa yrsda rysda ysrda syrda rsyda sryda ydsra dysra ysdra sydra dsyra sdyra rdsya drsya rsdya srdya dsrya sdrya ardsy radsy adrsy darsy rdasy drasy arsdy rasdy asrdy sardy rsady srady adsry dasry asdry sadry dsary sdary rdsay drsay rsday srday dsray sdray
Note: these 'words' (valid or invalid) are all the permutations of the word yards. These words are obtained by scrambling the letters in yards.