| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| left behind series of books | 0.37 | 0.1 | 4926 | 69 |
| left behind series of books in order | 1.49 | 0.3 | 4293 | 60 |
| how many books are in the left behind series | 0.9 | 0.9 | 7779 | 40 |
| how many books in the left behind series | 0.92 | 0.3 | 8937 | 37 |
| list of the left behind series books in order | 0.88 | 0.3 | 2822 | 71 |
| what are the books in the left behind series | 0.56 | 1 | 5026 | 95 |
| left behind series audio books in order | 1.5 | 0.6 | 3588 | 89 |
