2
feet
1
0
2
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
1
1
0
0
0
0
0
1
1
0
2
1
0
1
0
0
0
0
0
0
1
1
0
