No | Pattern | Freq | Relations |
---|---|---|---|
1 | [verb] [prep] [noun sg] over a period | 11 | |
2 | [vb pp] [prep] [noun sg] [prep] a period | 9 | |
3 | [verb] [prep] [noun sg] for a period | 8 | |
4 | [verb] in [noun sg] [prep] a period | 6 | |
5 | [v-ing] [prep] [noun sg] [prep] a period | 6 | |
6 | [verb] to [noun sg] [prep] a period | 5 | |
7 | [vb base] [prep] [noun sg] [prep] a period | 5 |