dlyha ldyha dylha ydlha lydha yldha dlhya ldhya dhlya hdlya lhdya hldya dyhla ydhla dhyla hdyla yhdla hydla lyhda ylhda lhyda hlyda yhlda hylda dlyah ldyah dylah ydlah lydah yldah dlayh ldayh dalyh adlyh ladyh aldyh dyalh ydalh daylh adylh yadlh aydlh lyadh yladh laydh alydh yaldh ayldh dlhay ldhay dhlay hdlay lhday hlday dlahy ldahy dalhy adlhy ladhy aldhy dhaly hdaly dahly adhly hadly ahdly lhady hlady lahdy alhdy haldy ahldy dyhal ydhal dhyal hdyal yhdal hydal dyahl ydahl dayhl adyhl yadhl aydhl dhayl hdayl dahyl adhyl hadyl ahdyl yhadl hyadl yahdl ayhdl haydl ahydl lyhad ylhad lhyad hlyad yhlad hylad lyahd ylahd layhd alyhd yalhd aylhd lhayd hlayd lahyd alhyd halyd ahlyd yhald hyald yahld ayhld hayld ahyld
Note: these 'words' (valid or invalid) are all the permutations of the word dlyha. These words are obtained by scrambling the letters in dlyha.