1
first time
1
1
2
2
1
1
1
1
2
3
3
2
2
1
2
1
2
0
2
2
0
2
1
0
0
3
1
1
0
0
0
0
1
1
1
0
1
2
1
3
3
3
2
2
1
3
4
0
2
2
0
1
3
1
1
1
2
0
0