syned ysned snyed nsyed ynsed nysed syend ysend seynd esynd yesnd eysnd sneyd nseyd senyd esnyd nesyd ensyd ynesd nyesd yensd eynsd neysd enysd synde ysnde snyde nsyde ynsde nysde sydne ysdne sdyne dsyne ydsne dysne sndye nsdye sdnye dsnye ndsye dnsye yndse nydse ydnse dynse ndyse dnyse syedn ysedn seydn esydn yesdn eysdn syden ysden sdyen dsyen ydsen dysen sedyn esdyn sdeyn dseyn edsyn desyn yedsn eydsn ydesn dyesn edysn deysn snedy nsedy sendy esndy nesdy ensdy sndey nsdey sdney dsney ndsey dnsey sedny esdny sdeny dseny edsny desny nedsy endsy ndesy dnesy ednsy densy yneds nyeds yends eynds neyds enyds yndes nydes ydnes dynes ndyes dnyes yedns eydns ydens dyens edyns deyns nedys endys ndeys dneys ednys denys
Note: these 'words' (valid or invalid) are all the permutations of the word syned. These words are obtained by scrambling the letters in syned.