| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] what [modal v] to be | 6 |
|
| 2 | [is] what [vb mod] to be | 6 |
|
| 3 | [is] what used to be | 5 |
|
| 4 | [is] what used to be | 5 |
|
| 5 | is what [modal v] to be | 5 |
|
