| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been working | 34 |
|
| 2 | they [verb] been working | 34 |
|
| 3 | they [vb base] been working | 21 |
|
| 4 | they [vb past] been working | 13 |
|
| 5 | they had been working | 13 |
|
| 6 | they 've been working | 13 |
|
| 7 | they have been working | 8 |
|
