vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
1
vx
0
0
vx
0
11
vx
0
5
vx
0
5
vx
0
2
vx
0
2
vx
0
2