| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [not/n't] [been] [vb pp] | 1581 |
|
| 2 | who has [been] [vb pp] | 337 |
|
| 3 | who has [not/n't] [vb pp] | 163 |
|
| 4 | who has [not/n't] [been] | 81 |
|
