| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [verb] to [det] | 17 |
|
| 2 | which have [been] [vb pp] to [det] | 17 |
|
| 3 | which has [been] [verb] to [det] | 11 |
|
| 4 | which have [been] [verb] to all | 7 |
|
