No | Pattern | Freq | Relations |
---|---|---|---|
1 | [verb] [adv prt] over a period of | 19 | |
2 | [vb pp] [adv prt] over a period of | 12 | |
3 | [adv prt] over a period of [noun] | 20 | |
4 | [adv prt] over a period of [noun sg] | 12 | |
5 | [adv prt] over a period of time | 12 | |
6 | [adv prt] over a period of time | 12 | |
7 | [adv prt] over a period of [noun pl] | 8 |