| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [vb pp] at | 117 |
|
| 2 | [modal v] have [vb pp] at [det] | 43 |
|
| 3 | [modal v] have been [vb pp] [det] | 42 |
|
| 4 | have been [vb pp] at [det] | 26 |
|
| 5 | [modal v] have been at [det] | 13 |
|
