| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb pp] a [adj -er] | 510 |
|
| 2 | could [verb] [vb pp] a | 290 |
|
| 3 | could [verb] a [adj -er] | 111 |
|
| 4 | could [verb] [vb pp] [adj -er] | 10 |
|
