dusky udsky dsuky sduky usdky sudky duksy udksy dkusy kdusy ukdsy kudsy dskuy sdkuy dksuy kdsuy skduy ksduy uskdy sukdy uksdy kusdy skudy ksudy dusyk udsyk dsuyk sduyk usdyk sudyk duysk udysk dyusk ydusk uydsk yudsk dsyuk sdyuk dysuk ydsuk syduk ysduk usydk suydk uysdk yusdk syudk ysudk dukys udkys dkuys kduys ukdys kudys duyks udyks dyuks yduks uydks yudks dkyus kdyus dykus ydkus kydus ykdus ukyds kuyds uykds yukds kyuds ykuds dskyu sdkyu dksyu kdsyu skdyu ksdyu dsyku sdyku dysku ydsku sydku ysdku dkysu kdysu dyksu ydksu kydsu ykdsu skydu ksydu sykdu yskdu kysdu yksdu uskyd sukyd uksyd kusyd skuyd ksuyd usykd suykd uyskd yuskd syukd ysukd ukysd kuysd uyksd yuksd kyusd ykusd skyud ksyud sykud yskud kysud yksud
Note: these 'words' (valid or invalid) are all the permutations of the word dusky. These words are obtained by scrambling the letters in dusky.