| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] what used to [be] | 5 |
|
| 2 | [is] [Wh det] used to [be] | 5 |
|
| 3 | [is] [Wh det] used to [be] | 5 |
|
| 4 | [is] [Wh det] used to be | 5 |
|
| 5 | [is] [Wh det] used to be | 5 |
|
