clock lcock colck oclck locck olcck clcok lccok cclok cclok lccok clcok coclk occlk ccolk ccolk occlk coclk locck olcck lcock clock oclck colck clokc lcokc colkc oclkc lockc olckc clkoc lckoc ckloc kcloc lkcoc klcoc coklc ocklc ckolc kcolc okclc koclc lokcc olkcc lkocc klocc oklcc kolcc clcko lccko cclko cclko lccko clcko clkco lckco cklco kclco lkcco klcco ccklo ccklo ckclo kcclo ckclo kcclo lckco clkco lkcco klcco cklco kclco cockl occkl ccokl ccokl occkl cockl cokcl ockcl ckocl kcocl okccl koccl cckol cckol ckcol kccol ckcol kccol ockcl cokcl okccl koccl ckocl kcocl lockc olckc lcokc clokc oclkc colkc lokcc olkcc lkocc klocc oklcc kolcc lckoc clkoc lkcoc klcoc ckloc kcloc ocklc coklc okclc koclc ckolc kcolc
Note: these 'words' (valid or invalid) are all the permutations of the word clock. These words are obtained by scrambling the letters in clock.