| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [noun] have been do [prep] | 9 |
|
| 2 | [Wh det] [noun] have been doing [prep] | 7 |
|
| 3 | [Wh det] [noun] had been do [prep] | 5 |
|
| 4 | [Wh det] [noun prp] have been do [prep] | 5 |
|
