| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [been] [adv] [prep] | 13 |
|
| 2 | which have been [adv] [prep] | 13 |
|
| 3 | which had [been] [adv] [prep] | 7 |
|
| 4 | which have [been] [adv] for | 6 |
|
