| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [adv] see | 111 |
|
| 2 | could only [adv] [verb] | 47 |
|
| 3 | [modal v] only [adv] see | 9 |
|
| 4 | could only [adv] see | 5 |
|
