| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | according to research by | 17 |
|
| 2 | accord to research by | 17 |
|
| 3 | [verb] to research by | 17 |
|
| 4 | [verb] to research by | 17 |
|
| 5 | [v-ing] to research by | 17 |
|
