| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [prep] [art] | 3253 |
|
| 2 | [vb infin] [vb pp] [prep] [art] | 2966 |
|
| 3 | could [vb infin] [vb pp] [prep] | 960 |
|
| 4 | could [vb infin] [vb pp] [art] | 844 |
|
