| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [prep] in | 1523 |
|
| 2 | be [vb pp] [prep] in | 1351 |
|
| 3 | be referred [prep] [prep] | 673 |
|
| 4 | be refer [prep] in | 230 |
|
| 5 | be referred [prep] in | 228 |
|
| 6 | [be] referred [prep] in | 228 |
|
