| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [noun pl] [verb] | 2247 |
|
| 2 | by [noun pl] [v-ing] | 808 |
|
| 3 | [prep] [noun pl] investigating | 44 |
|
| 4 | [prep] [noun pl] investigating | 44 |
|
| 5 | by [noun] investigating | 34 |
|
| 6 | by [noun pl] investigate | 34 |
|
| 7 | by [noun pl] investigating | 34 |
|
