| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has worked [prep] a [noun sg] | 20 |
|
| 2 | has worked as a [noun] | 9 |
|
| 3 | has worked [prep] a number | 5 |
|
| 4 | has worked [prep] a number | 5 |
|
