| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what had [vb pp] in the [noun] | 18 |
|
| 2 | what had [vb pp] in the [noun] | 18 |
|
| 3 | what had [vb pp] in the [noun sg] | 16 |
|
| 4 | what had happened in the [noun] | 16 |
|
