| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] they 'd [been] [v-ing] | 7 |
|
| 2 | [Wh det] they 'd be [v-ing] | 7 |
|
| 3 | [Wh det] they 'd been [v-ing] | 7 |
|
| 4 | what they 'd [be] [v-ing] | 5 |
|
