| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] n't [vb infin] | 1970 |
|
| 2 | but [vb past] n't [vb infin] | 274 |
|
| 3 | but they [vb past] n't | 229 |
|
| 4 | but they [vb past] [vb infin] | 80 |
|
