| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [vb pp] | 2574 |
|
| 2 | [coord] [pron] must be | 701 |
|
| 3 | [coord] must be [vb pp] | 347 |
|
| 4 | [coord] [pron] be [vb pp] | 12 |
|
