| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [modal v] to be | 108 |
|
| 2 | [prep] what [vb mod] to be | 108 |
|
| 3 | [prep] [pron] used to be | 104 |
|
| 4 | [prep] what used [prep] be | 86 |
|
| 5 | [prep] what used to [be] | 86 |
|
| 6 | [prep] [Wh det] used to be | 86 |
|
| 7 | [prep] what used to be | 86 |
|
| 8 | [prep] what used to be | 86 |
|
