| |x ----- |o| ----- | |
x| |x ----- |o| ----- | |
| |x ----- |o| ----- |x|
| |x ----- |o| ----- | |x
|x|x ----- |o| ----- | |
| |x ----- x|o| ----- | |
| |x ----- |o|x ----- | |
| |x ----- |o| ----- x| |