x
x
2 |
2
1 |
0
x5
x5
x5
0 |
1
x5
x5
x4
x4
x3
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5