C3123121111331312121111331333132313331333133313221211113313331122213111   >>    C312312111133131212111133133313231333133313331322121111331333112221311   <<    C3123121111331312121111331333132313331333133313221211113313331122213113   >>      C3123121111331312121111331333132313331333133313221211113313331122213112   >>