| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been work at | 45 |
|
| 2 | have be working at | 41 |
|
| 3 | had be work at | 19 |
|
| 4 | has be work at | 7 |
|
| 5 | have be work at | 7 |
|
| 6 | 've be work at | 7 |
|
