How many Fifty Shades of Grey books are there?
5
3
3
5
3
5
3
5
3
1
5
3
1
5
3
1
5
3
1
5
3
1
5
3
2
4
1
5
3
2
4
1
5
3
2
4
1
5
3
6
2
4
1
5
3
6
2
4
1
5
3
6
2
4
1
5
3
6
2
4
1
5
3
6
2
0
4
1
5
3
6
2
4
0
1
5
3
6
2
4
1
5
3
0
6
2
4
1
5
6
2
0
4
1
5
6
2
4
0
1
6
2
7
4
1
0
6
2
7
4
1
6
2
0
7
4
6
2
7
4
0
6
2
7
4
0
6
2
7
4
6
2
0
7
4
6
7
0
6
8
7
0
6
8
7
8
0
7
8
7
0
8
7
8
9
7
8
9
7
13
8
9
7
10
13
8
9
7
10
12
13
8
9
7
10
12
13
8
9
7
10
12
13
8
9
7
10
12
13
8
9
10
12
13
8
9
10
12
13
8
1 trilogy