| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [be] [vb pp] to | 141 |
|
| 2 | [adv] [be] [vb pp] to [adj] | 119 |
|
| 3 | could [be] [vb pp] to [adj] | 78 |
|
| 4 | could [adv] [be] [vb pp] [adj] | 43 |
|
