| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] have been as | 11 |
|
| 2 | it [vb mod] have been as | 11 |
|
| 3 | it have [adv] been as | 12 |
|
| 4 | it have not been as | 9 |
|
| 5 | it have [not/n't] been as | 9 |
|
| 6 | it have not been as | 6 |
|
