| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what used to [be] | 86 |
|
| 2 | [prep] what used to [be] | 86 |
|
| 3 | on [pron] used to [be] | 7 |
|
| 4 | on what [vb mod] to [be] | 7 |
|
| 5 | on what [modal v] to [be] | 7 |
|
| 6 | on what used to [be] | 6 |
|
| 7 | on what used to [be] | 6 |
|
| 8 | on what used [prep] [be] | 6 |
|
| 9 | on what used to [be] | 6 |
|
| 10 | on [Wh det] used to [be] | 6 |
|
| 11 | on what used to [be] | 6 |
|
