| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] to be [adj] | 62 |
|
| 2 | it ought to be [adj] | 33 |
|
| 3 | it used to be [adj] | 29 |
|
| 4 | it [vb mod] to be possible | 19 |
|
