| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it [verb] not been [art] | 10 |
|
| 2 | but it have not been [art] | 10 |
|
| 3 | but it [verb] not been [art] | 10 |
|
| 4 | but it [verb] not been a | 8 |
|
| 5 | but it [vb -s] not been [art] | 7 |
|
| 6 | but it [verb] n't been [art] | 6 |
|
| 7 | but it has not been [art] | 6 |
|
