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