| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [verb] [verb] [prep] [art] | 381 |
|
| 2 | what [verb] [vb pp] [prep] [art] | 360 |
|
| 3 | [pron] [verb] known [prep] [art] | 160 |
|
| 4 | what [verb] known [prep] [art] | 45 |
|
| 5 | what [verb] know [prep] [art] | 45 |
|
