| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] have been working | 16 |
|
| 2 | and have been working | 14 |
|
| 3 | and have been working | 14 |
|
| 4 | [conj] has been working | 8 |
|
| 5 | [conj] had been working | 6 |
|
