| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb -s] they | 705 |
|
| 2 | system [Wh det] [vb -s] | 354 |
|
| 3 | system [Wh det] they | 19 |
|
| 4 | system [vb -s] they | 9 |
|
