| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [noun] to [be] | 1845 |
|
| 2 | [noun] used to [be] | 532 |
|
| 3 | [det] used to [be] | 49 |
|
| 4 | [det] [noun] used to | 29 |
|
