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