Box | judge.

Ivan works at a factory that produces heavy machinery. He has a simple job | he knocks up wooden boxes of different sizes to pack machinery for delivery to the customers. Each box is a rectangular parallelepiped. Ivan uses six rectangular wooden pallets to make a box. Each pallet is used for one side of the box. Joe delivers pallets for Ivan. Joe is not very smart and often makes mistakes | he brings Ivan pallets that do not t together to make a box. But Joe does not trust Ivan. It always takes a lot of time to explain Joe that he has made a mistake. Fortunately, Joe adores everything related to computers and sincerely believes that computers never make mistakes. Ivan has decided to use this for his own advantage. Ivan asks you to write a program that given sizes of six rectangular pallets tells whether it is possible to make a box out of them.

Input

Input le contains several test cases. Each of them consists of six lines. Each line describes one pallet and contains two integer numbers w and h (1 ≤ w, h ≤ 10 000) | width and height of the pallet in millimeters respectively.

Output

For each test case, print one output line. Write a single word `POSSIBLE' to the output le if it is possible to make a box using six given pallets for its sides. Write a single word `IMPOSSIBLE' if it is not possible to do so.

#1587Box

Input

Output