| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [modal v] have been [art] first | 6 |
|
| 2 | [Wh det] [vb mod] have been [art] first | 6 |
|
| 3 | [Wh det] [modal v] have been the first | 5 |
|
