| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [vb pp] [prep] | 10594 |
|
| 2 | which [vb base] been [vb pp] | 1075 |
|
| 3 | which [vb base] [vb pp] [prep] | 459 |
|
| 4 | which [vb base] been [prep] | 31 |
|
