lisks ilsks lsiks sliks islks silks likss ilkss lkiss kliss iklss kilss lskis slkis lksis klsis sklis kslis iskls sikls iksls kisls skils ksils lissk ilssk lsisk slisk islsk silsk lissk ilssk lsisk slisk islsk silsk lssik slsik lssik slsik sslik sslik isslk sislk isslk sislk ssilk ssilk likss ilkss lkiss kliss iklss kilss lisks ilsks lsiks sliks islks silks lksis klsis lskis slkis kslis sklis iksls kisls iskls sikls ksils skils lsksi slksi lkssi klssi sklsi kslsi lsski slski lsski slski sslki sslki lkssi klssi lsksi slksi kslsi sklsi sksli kssli sskli sskli kssli sksli isksl siksl ikssl kissl skisl ksisl isskl siskl isskl siskl ssikl ssikl ikssl kissl isksl siksl ksisl skisl sksil kssil sskil sskil kssil sksil
Note: these 'words' (valid or invalid) are all the permutations of the word lisks. These words are obtained by scrambling the letters in lisks.