| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used to work [prep] the [noun] | 27 |
|
| 2 | used work [prep] the [noun sg] | 24 |
|
| 3 | used work in the [noun] | 12 |
|
| 4 | used work for the [noun] | 9 |
|
