| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [pers pn] | 7007 |
|
| 2 | [vb infin] [pers pn] [vb mod] | 6069 |
|
| 3 | could [pers pn] [vb mod] | 118 |
|
| 4 | could [vb infin] [vb mod] | 79 |
|
