| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [det] [vb mod] have been | 15 |
|
| 2 | [Wh adv] this [modal v] have been | 8 |
|
| 3 | why [det] [modal v] have been | 5 |
|
| 4 | however [det] [modal v] have been | 5 |
|
