| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] a | 4891 |
|
| 2 | which have been [vb pp] [prep] | 2621 |
|
| 3 | which have [vb pp] [prep] a | 135 |
|
| 4 | which have been [vb pp] a | 30 |
|
| 5 | which have been [prep] a | 14 |
|
