| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] by [art] [adj] | 14379 |
|
| 2 | could be [vb pp] by [art] | 456 |
|
| 3 | could be [vb pp] by [adj] | 264 |
|
| 4 | could be [vb pp] [art] [adj] | 61 |
|
