| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to contribute to [art] [adj] | 8 |
|
| 2 | [be] [vb pp] to contribute to [art] [adj] | 8 |
|
| 3 | [vb pp] to contribute to [art] [adj] [noun] | 8 |
|
| 4 | [vb pp] to contribute to [art] [adj] [noun sg] | 7 |
|
