| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [vb pp] | 5959 |
|
| 2 | [modal v] have [vb pp] [det] | 2212 |
|
| 3 | have been [vb pp] [det] | 668 |
|
| 4 | [modal v] have been [det] | 370 |
|
