| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [vb past] [pron] [verb] that [noun] | 7 |
|
| 2 | what [vb past] [pers pn] [verb] that [noun] | 6 |
|
| 3 | what [vb past] [pron] [verb] that [noun sg] | 6 |
|
| 4 | what did [pron] [verb] that [noun] | 6 |
|
| 5 | what [vb past] [pron] [vb infin] that [noun] | 6 |
|
