| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [pers pn] [vb infin] [pron] [adv] | 483 |
|
| 2 | could [pers pn] [vb infin] [pron] [adv] | 131 |
|
| 3 | could [pron] [vb infin] [pron] [adv] | 58 |
|
| 4 | could [pers pn] [verb] [pron] [adv] | 57 |
|
