| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] to | 2275 |
|
| 2 | [be] refer to | 1864 |
|
| 3 | [adv] refer to | 1710 |
|
| 4 | [be] [adv] refer | 484 |
|
