| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [vb infin] be | 2055 |
|
| 2 | [pron] must [vb infin] for | 196 |
|
| 3 | [pron] must be for | 38 |
|
| 4 | must [vb infin] be for | 14 |
|
