| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] refer to | 508 |
|
| 2 | be usually [verb] to | 222 |
|
| 3 | be usually refer [prep] | 35 |
|
| 4 | be usually refer [prep] | 35 |
|
| 5 | [be] usually refer to | 34 |
|
| 6 | be usually refer to | 34 |
|
