| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been working [prep] | 29 |
|
| 2 | who have [been] working [prep] | 29 |
|
| 3 | who have be working [prep] | 29 |
|
| 4 | who had [be] working [prep] | 12 |
|
| 5 | who have [be] working on | 10 |
|
| 6 | who have [be] working in | 9 |
|
| 7 | who has [be] working [prep] | 8 |
|
| 8 | who have [be] working [prep] | 6 |
|
