C3123121111113313121111331333133313223313331333133313233313232223321   >>    C312312111111331312111133133313331322331333133313331323331323222332   <<    C3123121111113313121111331333133313223313331333133313233313232223323   >>      C3123121111113313121111331333133313223313331333133313233313232223322   >>