| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have caused a lot | 5 |
|
| 2 | have caused a lot [prep] | 13 |
|
| 3 | have caused a lot of | 13 |
|
| 4 | have caused a lot [prep] | 13 |
|
| 5 | have caused a lot of | 13 |
|
