| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has not [been] [verb] | 1335 |
|
| 2 | has [been] [verb] a | 578 |
|
| 3 | has not [verb] a | 156 |
|
| 4 | has not [been] a | 82 |
|
| 5 | not [been] [verb] a | 32 |
|
