| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] had caused [art] | 23 |
|
| 2 | [Wh det] [vb past] caused [art] | 23 |
|
| 3 | [Wh det] [vb past] caused the | 19 |
|
| 4 | [Wh det] [vb past] caused the | 19 |
|
| 5 | which [vb past] caused [art] | 13 |
|
| 6 | what [vb past] caused [art] | 10 |
|
