4
4

8.0000000000
8.0000000000
8.0000000000
8.0000000000

8.0000000000
8.0000000000
8.0000000000
8.0000000000

8.0000000000
8.0000000000
8.0000000000
8.0000000000

8.0000000000
8.0000000000
8.0000000000
8.0000000000

