C3123121111113313121111331333131211111333131133133313232133313232323311   >>    C312312111111331312111133133313121111133313113313331323213331323232331   <<    C3123121111113313121111331333131211111333131133133313232133313232323313   >>      C3123121111113313121111331333131211111333131133133313232133313232323312   >>