| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [prep] a [adj] | 1349 |
|
| 2 | not [prep] a [adj] | 570 |
|
| 3 | but not [prep] [adj] | 340 |
|
| 4 | but not [prep] a | 131 |
|
| 5 | but not a [adj] | 92 |
|
