C111123313121111121111331333133313331331121111133313331333133313132313231321   >>    C11112331312111112111133133313331333133112111113331333133313331313231323132   <<    C111123313121111121111331333133313331331121111133313331333133313132313231323   >>      C111123313121111121111331333133313331331121111133313331333133313132313231322   >>