| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [det] [noun sg] | 134 |
|
| 2 | [modal v] have been at [noun sg] | 28 |
|
| 3 | [modal v] have been at [det] | 13 |
|
| 4 | have been at [det] [noun sg] | 12 |
|
