| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] up the [noun] | 812 |
|
| 2 | [vb pp] to investigate the [noun] | 76 |
|
| 3 | [vb pp] up to investigate the | 8 |
|
| 4 | up to investigate the [noun] | 7 |
|
