| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] it [modal v] be [verb] | 222 |
|
| 2 | at [Wh det] it be [verb] | 54 |
|
| 3 | at [Wh det] it [modal v] [verb] | 16 |
|
| 4 | at [Wh det] it [modal v] be | 11 |
|
| 5 | at [Wh det] [modal v] be [verb] | 10 |
|
