| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what they [verb] [prep] | 20 |
|
| 2 | know what they [vb base] [prep] | 13 |
|
| 3 | know what they do [prep] | 9 |
|
| 4 | know what they [vb past] [prep] | 7 |
|
| 5 | know what they do [prep] | 6 |
|
