| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be working at | 41 |
|
| 2 | [verb] been working at | 41 |
|
| 3 | [vb past] be working at | 20 |
|
| 4 | had be working at | 18 |
|
| 5 | [vb base] be working at | 12 |
|
| 6 | 've be working at | 7 |
|
| 7 | [vb -s] be working at | 6 |
|
| 8 | has be working at | 6 |
|
| 9 | have be working at | 5 |
|
