2
natural
4
6
2
1
1
0
0
1
0
3
2
3
1
3
0
2
1
2
1
2
2
0
2
2
1
2
1
0
4
2
2
3
0
1
3
0
1
1
2
2
5
3
1
3
1
1
0
0
1
