| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] [adv] been | 520 |
|
| 2 | which [vb past] [adv] been | 387 |
|
| 3 | [vb past] [adv] [adv] been | 363 |
|
| 4 | which [vb past] [adv] [adv] | 344 |
|
