| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] used to [be] [noun sg] | 59 |
|
| 2 | which used to [be] [noun] | 8 |
|
| 3 | which [modal v] to [be] [noun sg] | 6 |
|
| 4 | which used to [be] [noun sg] | 5 |
|
| 5 | which used [prep] [be] [noun sg] | 5 |
|
