2
0
1
2
0
1
2
0
1
2
0
1
2
0
2
2
0
2
2
0
2
2
0
1
2
0
1
2
0
1
2
0
2
2
0
1
2
0
1
2
0
1
2
0
1
2
0
1
2
0
1
2
0
1
2
0
1