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