| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [be] [adv] | 3294 |
|
| 2 | [conj] [be] n't | 1118 |
|
| 3 | but [be] not | 880 |
|
| 4 | but [be] [not/n't] | 880 |
|
| 5 | [coord] [be] n't | 650 |
|
| 6 | but [be] n't | 274 |
|
