| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] have been [adj] to | 41 |
|
| 2 | it [modal v] have been [adj] to | 39 |
|
| 3 | it [modal v] have been [verb] to | 23 |
|
| 4 | it [modal v] have been [vb pp] to | 23 |
|
| 5 | it [modal v] have been obvious to | 7 |
|
| 6 | it [modal v] have been obvious to | 7 |
|
