| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [pron] used to [be] | 88 |
|
| 2 | [adv] there [modal v] to [be] | 41 |
|
| 3 | [adv] there used to [be] | 40 |
|
| 4 | [adv] there used [prep] [be] | 34 |
|
