| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] what used to | 18 |
|
| 2 | [verb] [prep] what used to | 18 |
|
| 3 | [verb] in what used to | 8 |
|
| 4 | [verb] in what used to | 8 |
|
| 5 | [verb] what used to be | 15 |
|
| 6 | [verb] what used to [be] | 15 |
|
| 7 | [verb] what used to be | 15 |
|
| 8 | [verb] what used to [be] | 15 |
|
