| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] a [noun] | 22006 |
|
| 2 | but [pron] [noun] | 7262 |
|
| 3 | but a [noun] | 3156 |
|
| 4 | but [pron] a | 104 |
|
