| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they ca [not/n't] [verb] [pers pn] [det] | 10 |
|
| 2 | they ca [not/n't] [vb infin] [pers pn] [det] | 10 |
|
| 3 | they ca n't [verb] [pers pn] [det] | 10 |
|
