| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to | 17890 |
|
| 2 | be [vb pp] to | 16799 |
|
| 3 | [be] referred to | 1499 |
|
| 4 | be referred to | 1499 |
|
| 5 | be referred [prep] | 457 |
|
| 6 | be referred [prep] | 457 |
|
| 7 | be refer to | 451 |
|
| 8 | be referred to | 424 |
|
| 9 | [be] referred to | 424 |
|
