1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0

June 24, 1999
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0