| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [vb pp] [adv] in | 26 |
|
| 2 | which had been [vb pp] [adv] in | 14 |
|
| 3 | which has been [vb pp] [adv] in | 8 |
|
| 4 | which have been [vb pp] earlier in | 7 |
|
