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