| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] is [verb] | 1915 |
|
| 2 | idea [prep] [Wh det] [verb] | 82 |
|
| 3 | idea [prep] [Wh det] is | 44 |
|
| 4 | idea [Wh det] is [verb] | 8 |
|
