| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [Wh det] [be] | 409 |
|
| 2 | is it [be] | 357 |
|
| 3 | it [Wh det] [be] | 84 |
|
| 4 | is it [Wh det] | 23 |
|
