| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what [art] labour | 5 |
|
| 2 | know [Wh det] [art] labour | 5 |
|
| 3 | know what [art] labour | 5 |
|
| 4 | know [pron] the labour | 5 |
|
