C3132121111331312113313331333133313332313223313331323133313233313231211   >>    C313212111133131211331333133313331333231322331333132313331323331323121   <<    C3132121111331312113313331333133313332313223313331323133313233313231213   >>      C3132121111331312113313331333133313332313223313331323133313233313231212   >>