| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] for [num] [noun] | 1126 |
|
| 2 | must be [vb pp] for [noun] | 49 |
|
| 3 | must be [vb pp] [num] [noun] | 9 |
|
| 4 | must be [vb pp] for [num] | 8 |
|
