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