| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] been [v-ing] | 389 |
|
| 2 | [Wh det] [vb past] been [v-ing] | 198 |
|
| 3 | [Wh det] they [vb past] been | 137 |
|
| 4 | [Wh det] they [vb past] [v-ing] | 8 |
|
