| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it used to be [art] | 79 |
|
| 2 | it [vb mod] to be a | 54 |
|
| 3 | it [vb mod] to be the | 35 |
|
| 4 | it ought to be [art] | 15 |
|
