| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [vb pp] to [adj] effect | 6 |
|
| 2 | has [been] [vb pp] to [adj] effect | 6 |
|
| 3 | has [been] [vb pp] to [adj] effect | 6 |
|
| 4 | has been [vb pp] to [adj] effect | 6 |
|
