| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have not been a | 35 |
|
| 2 | [noun] had not been a | 33 |
|
| 3 | [noun] has not been a | 31 |
|
| 4 | [noun prp] have not been a | 17 |
|
| 5 | [noun pl] have not been a | 12 |
|
