4
natural
1
4
4
0
3
1
1
2
3
2
1
1
0
0
3
0
2
0
2
1
1
1
0
0
1
1
3
0
0
3
1
1
0
1
2
2
3
0
0
1
2
2
1
1
3
0
1
1
2
