| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [subord] [adv] [adj] | 546 |
|
| 2 | could be [vb pp] [subord] [adj] | 119 |
|
| 3 | could be [vb pp] [subord] [adv] | 55 |
|
| 4 | could be [vb pp] [adv] [adj] | 39 |
|
