| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they have been working | 8 |
|
| 2 | [adv] they have been working | 5 |
|
| 3 | they have been working [prep] | 20 |
|
| 4 | they have been working [prep] | 20 |
|
| 5 | they have been working [adv] | 9 |
|
| 6 | they have been working on | 9 |
|
| 7 | they have been working on | 9 |
|
| 8 | they have been working [adv] | 7 |
|
