| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] they have been [verb] for | 11 |
|
| 2 | [pron] they have been [v-ing] for | 9 |
|
| 3 | which they have been [verb] for | 8 |
|
| 4 | which they have been [verb] for | 8 |
|
| 5 | [pron] they had been [verb] for | 6 |
|
