| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [verb] [prep] [art] | 9165 |
|
| 2 | [vb pp] [to-vb] [prep] [art] | 6548 |
|
| 3 | [verb] to refer [prep] [art] | 112 |
|
| 4 | [vb pp] refer [prep] [art] | 64 |
|
| 5 | [vb pp] to refer [prep] [art] | 58 |
|
| 6 | [vb pp] to refer [prep] [art] | 58 |
|
