| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have [be] | 1939 |
|
| 2 | [pron] must [be] [prep] | 436 |
|
| 3 | must have [be] [prep] | 289 |
|
| 4 | [pron] must have [prep] | 39 |
|
| 5 | [pron] have [be] [prep] | 13 |
|
