| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] | 32770 |
|
| 2 | it could [vb infin] | 2635 |
|
| 3 | it could [adv] | 2124 |
|
| 4 | it [adv] [vb infin] | 444 |
|
