| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but has [not/n't] be | 21 |
|
| 2 | but [vb -s] [not/n't] be | 21 |
|
| 3 | but [vb -s] [not/n't] been | 21 |
|
| 4 | but [vb -s] not be | 19 |
|
