| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] [vb infin] | 6860 |
|
| 2 | [subord] [pron] could [vb infin] | 6786 |
|
| 3 | [subord] [pron] could [adv] | 998 |
|
| 4 | [subord] could [adv] [vb infin] | 13 |
|
