| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv] [adv] | 811 |
|
| 2 | [vb infin] [adv] [adv] [pers pn] | 430 |
|
| 3 | could [vb infin] [adv] [pers pn] | 145 |
|
| 4 | could [vb infin] [adv] [pers pn] | 39 |
|
| 5 | could [adv] [adv] [pers pn] | 13 |
|
