| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which used to [be] a [noun] | 5 |
|
| 2 | which used to [be] a [adj] | 5 |
|
| 3 | which used to [be] a [adj] | 5 |
|
| 4 | which used to [be] a [noun sg] | 5 |
|
