C3132121111331312113313331333133313331322121133133313233313231322232213121   >>    C313212111133131211331333133313331333132212113313331323331323132223221312   <<    C3132121111331312113313331333133313331322121133133313233313231322232213123   >>      C3132121111331312113313331333133313331322121133133313233313231322232213122   >>