No | Pattern | Freq | Relations |
---|---|---|---|
1 | [pron] [noun] over a period of | 12 | |
2 | [pron] [noun pl] over a period of | 8 | |
3 | [pron] over a period of [noun] | 6 | |
4 | [pron] over a period of time | 5 | |
5 | [pron] over a period of time | 5 | |
6 | [pron] over a period of [noun sg] | 5 |