ksccu skccu kcscu ckscu sckcu cskcu ksccu skccu kcscu ckscu sckcu cskcu kccsu ckcsu kccsu ckcsu ccksu ccksu sccku cscku sccku cscku ccsku ccsku kscuc skcuc kcsuc cksuc sckuc cskuc ksucc skucc kuscc ukscc sukcc uskcc kcusc ckusc kucsc ukcsc cuksc ucksc scukc csukc suckc usckc cuskc ucskc kscuc skcuc kcsuc cksuc sckuc cskuc ksucc skucc kuscc ukscc sukcc uskcc kcusc ckusc kucsc ukcsc cuksc ucksc scukc csukc suckc usckc cuskc ucskc kccus ckcus kccus ckcus cckus cckus kcucs ckucs kuccs ukccs cukcs uckcs kcucs ckucs kuccs ukccs cukcs uckcs ccuks ccuks cucks uccks cucks uccks sccuk cscuk sccuk cscuk ccsuk ccsuk scuck csuck succk uscck cusck ucsck scuck csuck succk uscck cusck ucsck ccusk ccusk cucsk uccsk cucsk uccsk
Note: these 'words' (valid or invalid) are all the permutations of the word ksccu. These words are obtained by scrambling the letters in ksccu.