| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [prep] [noun] | 141081 |
|
| 2 | must be [verb] [prep] | 5097 |
|
| 3 | must [verb] [prep] [noun] | 873 |
|
| 4 | must be [prep] [noun] | 239 |
|
| 5 | must be [verb] [noun] | 122 |
|
