| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] during a [adj] | 95 |
|
| 2 | [vb pp] during [adj] period | 62 |
|
| 3 | during a [adj] period | 61 |
|
| 4 | [vb pp] a [adj] period | 25 |
|
| 5 | [vb pp] during a period | 13 |
|
