| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] [verb] | 1253 |
|
| 2 | [adv] [vb infin] [verb] [noun] | 1111 |
|
| 3 | could [adv] [verb] [noun] | 813 |
|
| 4 | could [adv] [vb infin] [noun] | 809 |
|
| 5 | could [vb infin] [verb] [noun] | 525 |
|
