| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [prep] [pos pn] | 9896 |
|
| 2 | could [vb infin] [prep] | 9758 |
|
| 3 | could [vb infin] [pos pn] | 2931 |
|
| 4 | could [prep] [pos pn] | 59 |
|
