| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had be working [prep] [adj] | 7 |
|
| 2 | [noun] had [been] working [prep] [adj] | 7 |
|
| 3 | [noun] had been working [prep] [adj] | 7 |
|
| 4 | [noun] had [be] working [prep] [adj] | 7 |
|
