| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] [adv] | 1885 |
|
| 2 | be [vb pp] [adv] for | 767 |
|
| 3 | could be [vb pp] for | 643 |
|
| 4 | could be [adv] for | 37 |
|
