| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't [vb infin] why the | 8 |
|
| 2 | could n't understand [Wh adv] the | 6 |
|
| 3 | could n't see [Wh adv] the | 6 |
|
| 4 | could n't [vb infin] where the | 5 |
|
