| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] understand [Wh adv] they | 10 |
|
| 2 | [vb mod] understand [adv] they | 10 |
|
| 3 | [vb mod] understand why they | 8 |
|
| 4 | [vb mod] understand why they | 8 |
|
| 5 | can understand [adv] they | 5 |
|
