| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] they have been [v-ing] | 59 |
|
| 2 | [Wh det] they have [been] [v-ing] | 59 |
|
| 3 | what they have [been] [v-ing] | 37 |
|
| 4 | [Wh det] they had [been] [v-ing] | 24 |
|
| 5 | [Wh det] they have [been] doing | 20 |
|
| 6 | which they have [been] [v-ing] | 20 |
|
| 7 | [Wh det] they have [been] [v-ing] | 17 |
|
| 8 | [Wh det] they 've [been] [v-ing] | 11 |
|
| 9 | [Wh det] they 'd [been] [v-ing] | 7 |
|
