How many kids did Ivan the Terrible have?
8
4
4
2
4
5
2
3
4
5
2
3
4
5
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
2
3
1
4
5
6
2
8
3
1
4
5
6
2
8
3
1
4
5
6
2
8
3
1
4
5
6
2
8
3
1
4
5
7
6
2
8
3
1
5
7
6
2
8
3
1
5
7
6
8
3
1
7
6
8
1
7
6
8
1
7
6
10
8
1
7
10
8
1
7
10
8
1
7
10
8
9
1
7
10
8
9
1
7
10
8
9
1
7
10
8
9
1
0
7
10
8
9
1
7
10
0
8
9
1
12
7
10
8
9
0
1
12
7
10
8
9
12
0
7
15
10
9
13
12
7
14
15
10
0
9
13
ten
12
14
15
96