| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [adv] a [noun sg] [prep] | 377 |
|
| 2 | [conj] [not/n't] a [noun sg] [prep] | 226 |
|
| 3 | but [not/n't] [art] [noun sg] [prep] | 107 |
|
| 4 | but [not/n't] a [noun sg] [prep] | 37 |
|
| 5 | but [not/n't] a [noun] [prep] | 37 |
|
