| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been working [prep] [art] [noun pl] | 6 |
|
| 2 | had been working [prep] [art] [noun pl] | 6 |
|
| 3 | had been working [prep] the [noun pl] | 5 |
|
| 4 | had been working [prep] the [noun pl] | 5 |
|
