| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be a [adj] impact | 14 |
|
| 2 | [be] a [adj] impact | 14 |
|
| 3 | [be] a [adj] impact | 13 |
|
| 4 | [is] a [adj] impact | 6 |
|
| 5 | [be] a [adj] impact | 5 |
|
| 6 | be a [adj] impact | 5 |
|
| 7 | is a [adj] impact | 5 |
|
