| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [verb] [prep] [art] | 2322 |
|
| 2 | [prep] refer [prep] [art] | 113 |
|
| 3 | [prep] refer [prep] [art] | 113 |
|
| 4 | by refer [prep] [art] | 57 |
|
| 5 | by refer [prep] [art] | 57 |
|
