| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has be [verb] to | 2122 |
|
| 2 | has be [vb pp] to | 2039 |
|
| 3 | [verb] be referred to | 120 |
|
| 4 | have be referred to | 110 |
|
| 5 | [vb -s] be referred to | 55 |
|
| 6 | has be refer to | 55 |
|
| 7 | has be referred [prep] | 54 |
|
| 8 | has be referred [prep] | 54 |
|
| 9 | has be referred to | 51 |
|
| 10 | has [be] referred to | 51 |
|
