| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has not [been] [vb pp] | 1298 |
|
| 2 | has [been] [vb pp] a | 372 |
|
| 3 | has not [vb pp] a | 155 |
|
| 4 | has not [been] a | 82 |
|
| 5 | not [been] [vb pp] a | 26 |
|
