clank lcank calnk aclnk lacnk alcnk clnak lcnak cnlak nclak lncak nlcak canlk acnlk cnalk ncalk anclk naclk lanck alnck lnack nlack anlck nalck clakn lcakn calkn aclkn lackn alckn clkan lckan cklan kclan lkcan klcan cakln ackln ckaln kcaln akcln kacln lakcn alkcn lkacn klacn aklcn kalcn clnka lcnka cnlka nclka lncka nlcka clkna lckna cklna kclna lkcna klcna cnkla nckla cknla kcnla nkcla kncla lnkca nlkca lknca klnca nklca knlca cankl acnkl cnakl ncakl anckl nackl caknl acknl ckanl kcanl akcnl kacnl cnkal nckal cknal kcnal nkcal kncal ankcl nakcl akncl kancl nkacl knacl lankc alnkc lnakc nlakc anlkc nalkc laknc alknc lkanc klanc aklnc kalnc lnkac nlkac lknac klnac nklac knlac anklc naklc aknlc kanlc nkalc knalc
Note: these 'words' (valid or invalid) are all the permutations of the word clank. These words are obtained by scrambling the letters in clank.