| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [vb pp] a | 77 |
|
| 2 | which have [vb pp] an | 15 |
|
| 3 | which have become a | 13 |
|
| 4 | which have had a | 12 |
|
| 5 | which have played a | 5 |
|
| 6 | which have made a | 5 |
|
