| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be not a police | 8 |
|
| 2 | be [not/n't] a police | 8 |
|
| 3 | be not a police | 7 |
|
| 4 | be [adv] a police | 6 |
|
| 5 | is [adv] a police | 6 |
|
