| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | carry out [art] investigation | 22 |
|
| 2 | carry [adv prt] an investigation | 13 |
|
| 3 | carry [adv prt] the investigation | 9 |
|
| 4 | carrying [adv prt] [art] investigation | 8 |
|
| 5 | to carry [adv prt] [art] investigation | 6 |
|
