How many Twilight books have been written?
6
5
5
3
5
3
5
4
3
5
4
3
5
4
3
5
4
2
3
5
4
2
3
7
5
4
2
3
7
6
5
4
2
3
7
6
5
4
2
3
7
6
5
4
2
1
3
7
6
5
0
4
2
1
3
7
6
5
4
8
2
1
3
7
6
5
4
8
2
1
3
7
6
5
4
8
2
1
3
7
6
5
9
4
8
2
1
3
13
7
6
5
9
4
8
2
1
3
13
7
6
5
9
4
8
2
1
3
13
7
6
5
9
4
8
2
1
3
13
7
6
9
11
4
10
8
2
1
12
3
13
7
6
9
11
4
10
8
2
1
12
13
7
6
9
11
4
10
8
2
1
12
13
7
6
9
11
10
8
2
1
12
13
7
6
9
11
10
8
2
1
12
13
7
6
9
14
11
10
8
2
1
12
13
7
6
16
9
14
11
10
8
66
62
59
57
63
58
61
132
69