| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] used to be | 1772 |
|
| 2 | [Wh pn] [vb mod] to be | 61 |
|
| 3 | [Wh pn] [modal v] to be | 61 |
|
| 4 | [Wh pn] used to be | 42 |
|
| 5 | [Wh pn] used to [be] | 42 |
|
| 6 | [Wh pn] used to be | 42 |
|
| 7 | [Wh pn] used [prep] be | 42 |
|
| 8 | [Wh pn] used [prep] be | 42 |
|
