| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [pron] [modal v] | 20783 |
|
| 2 | [vb base] [pron] [modal v] | 18308 |
|
| 3 | [vb base] but [pron] | 506 |
|
| 4 | [vb base] but [modal v] | 13 |
|
