| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] a [adj] [noun] | 478 |
|
| 2 | could be a [adj] [noun] | 413 |
|
| 3 | could be [vb pp] a [noun] | 46 |
|
| 4 | could be [vb pp] a [adj] | 34 |
|
| 5 | could be [vb pp] [adj] [noun] | 28 |
|
