No | Pattern | Freq | Relations |
---|---|---|---|
1 | [coord] over a period of [noun] | 15 | |
2 | [coord] over a period of [noun] | 15 | |
3 | [coord] over a period of [noun sg] | 12 | |
4 | [coord] over a period of time | 11 | |
5 | [coord] over a period of time | 11 | |
6 | and over a period of [noun] | 9 |