| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there used to [be] | 341 |
|
| 2 | [conj] used to [be] | 131 |
|
| 3 | [conj] there used to | 69 |
|
| 4 | [conj] there to [be] | 7 |
|
