| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been working [prep] | 155 |
|
| 2 | had [been] working [prep] | 155 |
|
| 3 | had [been] working on | 46 |
|
| 4 | had [been] working on | 46 |
|
| 5 | had [been] working in | 25 |
|
| 6 | had [been] working in | 25 |
|
| 7 | had [been] working for | 24 |
|
| 8 | had [been] working for | 24 |
|
| 9 | had [been] working at | 18 |
|
| 10 | had [been] working at | 18 |
|
| 11 | had [been] working with | 14 |
|
| 12 | had [been] working with | 14 |
|
| 13 | had [been] working as | 9 |
|
| 14 | had [been] working as | 9 |
|
