How many kids did Ivan the Terrible have?
8
2
2
2
3
2
3
4
2
3
4
2
1
3
4
2
1
3
4
2
1
3
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
0
1
3
5
4
2
1
3
0
5
4
2
1
3
6
0
5
4
2
1
3
6
5
4
2
0
1
3
6
5
4
2
1
7
3
0
6
5
4
1
7
3
6
0
5
4
1
7
3
6
5
4
8
0
1
7
6
5
4
8
1
7
6
5
8
1
7
6
5
8
7
6
5
8
7
6
5
8
7
9
6
5
8
7
9
6
8
7
9
6
8
7
9
6
8
7
11
10
9
6
8
7
11
10
9
6
13
8
7
11
10
9
6
13
12
8
7
11
10
9
6
13
12
8
7
11
10
9
6
13
12
8
4 children
7
11
10
9
13
12
8
14
7
11
2 children
3 children
4 children
5 children