| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to [pron] [adj] | 108 |
|
| 2 | must be [vb pp] to [pron] | 50 |
|
| 3 | must be [vb pp] to [adj] | 32 |
|
| 4 | must be [vb pp] [pron] [adj] | 5 |
|
