| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] to be [adv] | 26 |
|
| 2 | could be show to be [adv] | 7 |
|
| 3 | could be shown to be [adv] | 7 |
|
| 4 | could be said to be [adv] | 6 |
|
| 5 | could be say to be [adv] | 6 |
|
