| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] they have been [v-ing] [prep] | 22 |
|
| 2 | what they have been [v-ing] [prep] | 13 |
|
| 3 | [Wh det] they had been [v-ing] [prep] | 11 |
|
| 4 | which they have been [v-ing] [prep] | 9 |
|
| 5 | [Wh det] they have been [v-ing] for | 8 |
|
| 6 | [Wh det] they have been doing [prep] | 5 |
|
| 7 | [Wh det] they have been [v-ing] in | 5 |
|
| 8 | [Wh det] they have been [v-ing] [prep] | 5 |
|
