| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] [conj] | 37774 |
|
| 2 | but [prep] a [noun] | 1707 |
|
| 3 | but [prep] [noun] [conj] | 427 |
|
| 4 | but a [noun] [conj] | 141 |
|
