hanky ahnky hnaky nhaky anhky nahky hakny ahkny hkany khany akhny kahny hnkay nhkay hknay khnay nkhay knhay ankhy nakhy aknhy kanhy nkahy knahy hanyk ahnyk hnayk nhayk anhyk nahyk haynk ahynk hyank yhank ayhnk yahnk hnyak nhyak hynak yhnak nyhak ynhak anyhk nayhk aynhk yanhk nyahk ynahk hakyn ahkyn hkayn khayn akhyn kahyn haykn ahykn hyakn yhakn ayhkn yahkn hkyan khyan hykan yhkan kyhan ykhan akyhn kayhn aykhn yakhn kyahn ykahn hnkya nhkya hknya khnya nkhya knhya hnyka nhyka hynka yhnka nyhka ynhka hkyna khyna hykna yhkna kyhna ykhna nkyha knyha nykha ynkha kynha yknha ankyh nakyh aknyh kanyh nkayh knayh anykh naykh aynkh yankh nyakh ynakh akynh kaynh ayknh yaknh kyanh ykanh nkyah knyah nykah ynkah kynah yknah
Note: these 'words' (valid or invalid) are all the permutations of the word hanky. These words are obtained by scrambling the letters in hanky.