| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [modal v] have been [art] [det] | 5 |
|
| 2 | [det] [modal v] have been [art] [det] | 5 |
|
| 3 | [det] [modal v] have been [det] [verb] | 9 |
|
| 4 | [det] [modal v] have been [det] [to-vb] | 9 |
|
