hayed ahyed hyaed yhaed ayhed yahed haeyd aheyd heayd ehayd aehyd eahyd hyead yhead heyad ehyad yehad eyhad ayehd yaehd aeyhd eayhd yeahd eyahd hayde ahyde hyade yhade ayhde yahde hadye ahdye hdaye dhaye adhye dahye hydae yhdae hdyae dhyae ydhae dyhae aydhe yadhe adyhe dayhe ydahe dyahe haedy ahedy heady ehady aehdy eahdy hadey ahdey hdaey dhaey adhey dahey heday ehday hdeay dheay edhay dehay aedhy eadhy adehy daehy edahy deahy hyeda yheda heyda ehyda yehda eyhda hydea yhdea hdyea dhyea ydhea dyhea hedya ehdya hdeya dheya edhya dehya yedha eydha ydeha dyeha edyha deyha ayedh yaedh aeydh eaydh yeadh eyadh aydeh yadeh adyeh dayeh ydaeh dyaeh aedyh eadyh adeyh daeyh edayh deayh yedah eydah ydeah dyeah edyah deyah
Note: these 'words' (valid or invalid) are all the permutations of the word hayed. These words are obtained by scrambling the letters in hayed.