| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] it [modal v] [be] [verb] | 222 |
|
| 2 | [Wh det] case it [modal v] [be] | 30 |
|
| 3 | case it [modal v] [be] [verb] | 26 |
|
| 4 | [Wh det] case it [modal v] [verb] | 9 |
|
