| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] not been | 2336 |
|
| 2 | [vb base] been [noun] | 940 |
|
| 3 | [vb base] not [noun] | 423 |
|
| 4 | not been [noun] | 99 |
|
