| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what used to [be] | 86 |
|
| 2 | [prep] [Wh det] used to [be] | 86 |
|
| 3 | [prep] [Wh det] used to be | 86 |
|
| 4 | [prep] [Wh det] used to [be] | 86 |
|
| 5 | [prep] [Wh det] used to be | 86 |
|
| 6 | of [Wh det] used to [be] | 28 |
|
| 7 | in [Wh det] used to [be] | 26 |
|
| 8 | to [Wh det] used to [be] | 7 |
|
| 9 | on [Wh det] used to [be] | 6 |
|
