| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [pron] used to [be] | 164 |
|
| 2 | [noun] which [modal v] to [be] | 74 |
|
| 3 | [noun] which used to [be] | 29 |
|
| 4 | [noun] which used [prep] [be] | 29 |
|
