| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to a [adj] | 518 |
|
| 2 | must be [vb pp] to a | 45 |
|
| 3 | must be [vb pp] to [adj] | 32 |
|
| 4 | must be [vb pp] a [adj] | 30 |
|
