| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who be working | 203 |
|
| 2 | who are working | 69 |
|
| 3 | who were working | 43 |
|
| 4 | who was working | 38 |
|
| 5 | who is working | 38 |
|
| 6 | who 's working | 14 |
|
