| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] which [vb mod] [verb] | 173 |
|
| 2 | [verb] which [vb mod] allow | 10 |
|
| 3 | [vb pp] which [modal v] allow | 8 |
|
| 4 | [vb pp] [pron] [vb mod] allow | 8 |
|
