| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] [prep] | 5095 |
|
| 2 | [be] [verb] [prep] [pos pn] | 4272 |
|
| 3 | must [verb] [prep] [pos pn] | 268 |
|
| 4 | must [be] [prep] [pos pn] | 76 |
|
| 5 | must [be] [verb] [pos pn] | 47 |
|
