| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] over a period | 78 |
|
| 2 | [adv] over a period | 69 |
|
| 3 | [adv] [vb pp] over a | 53 |
|
| 4 | [adv] [vb pp] a period | 16 |
|
