| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [vb past] cause the | 10 |
|
| 2 | what [vb past] cause [art] | 10 |
|
| 3 | what had cause [art] | 10 |
|
| 4 | what [vb past] caused [art] | 10 |
|
| 5 | what [vb past] cause the | 10 |
|
