| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] [is] [det] [noun sg] | 9 |
|
| 2 | [prep] what [is] [det] [noun] | 6 |
|
| 3 | [prep] [Wh det] is [det] [noun] | 5 |
|
| 4 | [prep] [Wh det] [is] that [noun] | 5 |
|
