C1231321123223331211111131211113313331333132322131213223321123111   >>    C123132112322333121111113121111331333133313232213121322332112311   <<    C1231321123223331211111131211113313331333132322131213223321123113   >>      C1231321123223331211111131211113313331333132322131213223321123112   >>