| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] at the [noun] of | 3214 |
|
| 2 | [adv] investigate the [noun] of | 66 |
|
| 3 | [adv] investigate at the [noun] | 7 |
|
| 4 | investigate at the [noun] of | 5 |
|
