| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had worked [prep] a | 62 |
|
| 2 | have worked as a | 61 |
|
| 3 | has worked [prep] a | 27 |
|
| 4 | have worked with a | 19 |
|
| 5 | have worked in a | 18 |
|
| 6 | have worked for a | 15 |
|
| 7 | having worked [prep] a | 13 |
|
| 8 | 've worked [prep] a | 12 |
|
| 9 | have worked on a | 11 |
|
| 10 | have worked [prep] a | 10 |
|
| 11 | have worked [prep] a | 9 |
|
| 12 | have worked at a | 8 |
|
