| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] who had [be] working | 7 |
|
| 2 | [noun pl] who had [be] working | 5 |
|
| 3 | who had [be] working [prep] | 12 |
|
| 4 | who had [be] working [prep] | 12 |
|
| 5 | who had [be] working in | 5 |
|
| 6 | who had [be] working in | 5 |
|
