| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv] [adv] | 811 |
|
| 2 | [vb infin] [adv] [adv] if | 134 |
|
| 3 | could [vb infin] [adv] if | 48 |
|
| 4 | could [vb infin] [adv] if | 27 |
|
