| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [pron] used to [be] | 28 |
|
| 2 | [verb] there used to [be] | 11 |
|
| 3 | [vb base] there [modal v] to [be] | 11 |
|
| 4 | [vb base] there used [prep] [be] | 6 |
|
