C3123121111331312121111331333133313331333121333131133131133133313232321   >>    C312312111133131212111133133313331333133312133313113313113313331323232   <<    C3123121111331312121111331333133313331333121333131133131133133313232323   >>      C3123121111331312121111331333133313331333121333131133131133133313232322   >>