| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [pron] [modal v] [vb infin] | 9685 |
|
| 2 | [pron] [pron] must [vb infin] | 638 |
|
| 3 | [Wh det] [pron] must [verb] | 394 |
|
