| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has [adv] [been] | 1559 |
|
| 2 | [pron] has not [been] | 981 |
|
| 3 | it have not [been] | 954 |
|
| 4 | it [verb] not [been] | 954 |
|
| 5 | it [vb -s] not [been] | 435 |
|
| 6 | it has not [be] | 372 |
|
