| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [prep] [art] [noun sg] | 883 |
|
| 2 | been working [prep] [art] [noun sg] | 124 |
|
| 3 | had been working [prep] [art] | 65 |
|
| 4 | had been working [prep] [noun sg] | 12 |
|
