| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] refer to [prep] | 79 |
|
| 2 | [vb mod] [adv] [be] refer [prep] | 44 |
|
| 3 | [vb mod] [adv] [be] refer to | 41 |
|
| 4 | [adv] [be] refer to [prep] | 16 |
|
