| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [pron] [noun] | 903 |
|
| 2 | could [adv] [vb infin] [pron] luck | 48 |
|
| 3 | [modal v] [not/n't] [vb infin] [pron] luck | 46 |
|
| 4 | [vb mod] [not/n't] [vb infin] [pron] luck | 46 |
|
| 5 | could [not/n't] [verb] [pron] luck | 35 |
|
| 6 | could [not/n't] [vb infin] [pron] luck | 35 |
|
