| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used to be [noun] [noun pl] | 13 |
|
| 2 | used [prep] be [noun] [noun pl] | 13 |
|
| 3 | used [prep] be [noun] [noun pl] | 13 |
|
| 4 | used [prep] be [noun sg] [noun pl] | 11 |
|
