| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] [vb infin] [det] | 7030 |
|
| 2 | [vb mod] [not/n't] [vb infin] [det] | 7030 |
|
| 3 | could [adv] [vb infin] [det] | 1572 |
|
| 4 | could [not/n't] [vb infin] [adj] | 1553 |
|
| 5 | could [not/n't] [verb] [det] | 1124 |
|
| 6 | could [not/n't] [vb infin] [det] | 1123 |
|
