| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [prep] [art] [adj] | 343 |
|
| 2 | had been working [prep] [art] | 65 |
|
| 3 | been working [prep] [art] [adj] | 48 |
|
| 4 | had been working [prep] [adj] | 20 |
|
