| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [art] [adj] | 2901 |
|
| 2 | n't [vb infin] [art] [adj] | 2305 |
|
| 3 | could n't [vb infin] [art] | 1443 |
|
| 4 | could n't [vb infin] [adj] | 136 |
|
