| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] they have [been] [v-ing] for | 9 |
|
| 2 | [subord] they have been [v-ing] for | 9 |
|
| 3 | [subord] they had [been] [v-ing] for | 5 |
|
