PS the second test case looks similar.  reference:
![ref](https://f.cloud.github.com/assets/1454961/944889/8033236c-02e4-11e3-9601-ed4e5335aa48.png)
test:
![test](https://f.cloud.github.com/assets/1454961/944891/84ac6534-02e4-11e3-97e5-5364118ac038.png)