How many books about the witches are in the Discworld series?
6
4
4
4
4
3
4
5
3
2
4
5
3
2
4
5
3
7
2
4
5
3
7
2
4
5
3
7
2
4
6
5
3
7
2
4
6
5
3
7
2
4
6
5
3
7
2
4
1
6
5
3
7
2
4
1
6
5
3
7
2
4
1
6
5
3
7
2
4
1
6
8
5
3
7
2
4
1
6
8
5
3
7
2
4
1
6
8
5
3
7
2
4
1
6
8
5
3
7
2
4
1
6
8
5
3
7
2
0
1
6
8
9
5
3
7
2
1
6
8
9
5
3
7
2
1
6
8
9
5
3
7
2
1
6
8
9
5
7
2
1
6
8
9
7
10
1
6
8
9
7
10
1
6
8
9
10
11
1
6
8
9
10
11
1
6
8
9
10
11
1
8
9
10
11
1
8
9
13
10
11
1
8
9
13
10
11
8
9
13
10
11
8
9
13
10
11
8
9
13
ten