disks idsks dsiks sdiks isdks sidks dikss idkss dkiss kdiss ikdss kidss dskis sdkis dksis kdsis skdis ksdis iskds sikds iksds kisds skids ksids dissk idssk dsisk sdisk isdsk sidsk dissk idssk dsisk sdisk isdsk sidsk dssik sdsik dssik sdsik ssdik ssdik issdk sisdk issdk sisdk ssidk ssidk dikss idkss dkiss kdiss ikdss kidss disks idsks dsiks sdiks isdks sidks dksis kdsis dskis sdkis ksdis skdis iksds kisds iskds sikds ksids skids dsksi sdksi dkssi kdssi skdsi ksdsi dsski sdski dsski sdski ssdki ssdki dkssi kdssi dsksi sdksi ksdsi skdsi sksdi kssdi sskdi sskdi kssdi sksdi isksd siksd ikssd kissd skisd ksisd isskd siskd isskd siskd ssikd ssikd ikssd kissd isksd siksd ksisd skisd sksid kssid sskid sskid kssid sksid
Note: these 'words' (valid or invalid) are all the permutations of the word disks. These words are obtained by scrambling the letters in disks.