| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [verb] a [noun] | 1591 |
|
| 2 | [prep] [Wh det] [verb] a [noun] | 370 |
|
| 3 | [prep] what [verb] [art] [noun] | 194 |
|
| 4 | [prep] what [verb] a [noun] | 109 |
|
| 5 | [prep] what [verb] a [noun] | 109 |
|
