| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] to | 2275 |
|
| 2 | [be] referred to | 1499 |
|
| 3 | [adv] referred to | 1007 |
|
| 4 | [be] [adv] referred | 455 |
|
