| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] used to be | 86 |
|
| 2 | [prep] what used [prep] be | 86 |
|
| 3 | [prep] [Wh det] used [prep] be | 86 |
|
| 4 | [prep] [Wh det] used to be | 86 |
|
| 5 | of [Wh det] used [prep] be | 28 |
|
| 6 | in [Wh det] used [prep] be | 26 |
|
| 7 | to [Wh det] used [prep] be | 7 |
|
| 8 | on [Wh det] used [prep] be | 6 |
|
