| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pers pn] could [adv] [vb infin] | 1832 |
|
| 2 | [vb past] [conj] [pers pn] could [vb infin] | 680 |
|
| 3 | [vb past] [pers pn] could [adv] [vb infin] | 180 |
|
| 4 | [vb past] [conj] [pers pn] could [adv] | 118 |
|
