| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it is [adv] not | 31 |
|
| 2 | but it is [adv] [not/n't] | 31 |
|
| 3 | but it is certainly [not/n't] | 14 |
|
| 4 | but it is still [not/n't] | 8 |
|
