| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] over a [noun] | 186 |
|
| 2 | [v-ing] over a [noun sg] | 174 |
|
| 3 | [verb] over a period | 65 |
|
| 4 | [v-ing] [adv] a period | 14 |
|
| 5 | [v-ing] over a period | 13 |
|
| 6 | [v-ing] over a period | 13 |
|
| 7 | [v-ing] over [art] period | 13 |
|
| 8 | [v-ing] over a period | 13 |
|
| 9 | [v-ing] over [art] period | 13 |
|
| 10 | [v-ing] [adv prt] a period | 13 |
|
