| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [adv] [adv] | 257 |
|
| 2 | [not/n't] [vb infin] [adv] [adv] [verb] | 172 |
|
| 3 | could [not/n't] [vb infin] [adv] [verb] | 128 |
|
| 4 | could [vb infin] [adv] [adv] [verb] | 49 |
|
| 5 | could [not/n't] [adv] [adv] [verb] | 27 |
|
