| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] used to be | 1772 |
|
| 2 | [ex0] [modal v] to be | 431 |
|
| 3 | [ex0] [vb mod] to be | 431 |
|
| 4 | [ex0] used to be | 341 |
|
| 5 | [ex0] used to [be] | 341 |
|
| 6 | [ex0] used to [be] | 341 |
|
| 7 | [ex0] used to be | 341 |
|
| 8 | [ex0] used [prep] be | 341 |
|
