| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been working [prep] | 175 |
|
| 2 | had be working [prep] | 156 |
|
| 3 | [vb past] be working on | 54 |
|
| 4 | [vb past] be working in | 30 |
|
| 5 | [vb past] be working for | 27 |
|
| 6 | [vb past] be working at | 20 |
|
| 7 | 'd be working [prep] | 20 |
|
| 8 | [vb past] be working with | 19 |
|
| 9 | [vb past] be working as | 9 |
|
