k
0
2
k
0
2
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
1
k
0
7
k
0
1
k
0
1
k
0
1