| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [modal v] [verb] | 18418 |
|
| 2 | [Wh det] [modal v] [vb infin] | 18254 |
|
| 3 | [pron] [modal v] become | 1486 |
|
| 4 | [Wh det] [modal v] become | 215 |
|
