| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 've [verb] [prep] | 6925 |
|
| 2 | [verb] refer [prep] | 568 |
|
| 3 | have refer [prep] | 228 |
|
| 4 | [vb base] refer [prep] | 151 |
|
