| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has [been] a [adj] | 140 |
|
| 2 | it has n't [been] [adj] | 33 |
|
| 3 | has n't [been] a [adj] | 21 |
|
| 4 | it has n't [been] a | 13 |
|
