| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can be [vb pp] to [adj] effect | 20 |
|
| 2 | can be used [prep] [adj] effect | 19 |
|
| 3 | can be [vb pp] [prep] good effect | 11 |
|
| 4 | can be [vb pp] [prep] great effect | 7 |
|
