| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [verb] a | 1211 |
|
| 2 | it have [vb pp] a | 1174 |
|
| 3 | [pron] have caused a | 26 |
|
| 4 | it have caused [art] | 8 |
|
| 5 | it have caused [art] | 8 |
|
| 6 | it have cause a | 6 |
|
| 7 | it [verb] caused a | 6 |
|
| 8 | it have caused a | 6 |
|
