| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [conj] [verb] | 717 |
|
| 2 | [indef pn] could [vb infin] [verb] | 266 |
|
| 3 | [indef pn] could [vb infin] [conj] | 168 |
|
| 4 | [indef pn] [vb infin] [conj] [verb] | 22 |
|
