| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [be] [verb] [prep] | 17170 |
|
| 2 | [verb] [be] refer [prep] | 154 |
|
| 3 | have [be] refer [prep] | 143 |
|
| 4 | [vb -s] [be] refer [prep] | 62 |
|
