| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who had worked [prep] | 109 |
|
| 2 | who had worked [prep] | 109 |
|
| 3 | who had worked with | 26 |
|
| 4 | who had worked with | 26 |
|
| 5 | who had worked for | 24 |
|
| 6 | who had worked for | 24 |
|
| 7 | who had worked on | 21 |
|
| 8 | who had worked on | 21 |
|
| 9 | who had worked in | 20 |
|
| 10 | who had worked in | 20 |
|
| 11 | who had worked at | 6 |
|
| 12 | who had worked at | 6 |
|
