| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to | 77926 |
|
| 2 | be [vb pp] to | 62721 |
|
| 3 | be refer to | 1864 |
|
| 4 | be referred [prep] | 1654 |
|
| 5 | be referred [prep] | 1654 |
|
| 6 | [be] referred to | 1499 |
|
| 7 | be referred to | 1499 |
|
