| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] used to [be] | 532 |
|
| 2 | [Wh det] used to [be] | 208 |
|
| 3 | [Wh det] [noun] to [be] | 15 |
|
| 4 | [Wh det] [noun] used to | 11 |
|
