| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [prep] | 436 |
|
| 2 | [pron] must be [prep] | 436 |
|
| 3 | [pron] [modal v] be for | 331 |
|
| 4 | [pron] must [be] for | 38 |
|
| 5 | [pron] must be for | 38 |
|
