| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [prep] [det] [noun] | 291 |
|
| 2 | worked [prep] [det] [noun] | 106 |
|
| 3 | had worked [prep] [noun] | 105 |
|
| 4 | had worked [prep] [det] | 19 |
|
