| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [not/n't] be used for [det] | 5 |
|
| 2 | [verb] [not/n't] been used for [det] | 5 |
|
| 3 | [verb] [not/n't] be used for [det] | 5 |
|
