| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [verb] [to-vb] [det] | 5 |
|
| 2 | [pron] must [be] [vb pp] [to-vb] [det] | 5 |
|
| 3 | [pron] must [be] [verb] [to-vb] [det] | 5 |
|
