| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] reference to | 335 |
|
| 2 | [noun] be [vb pp] [prep] reference | 98 |
|
| 3 | [noun] [vb pp] [prep] reference to | 21 |
|
| 4 | [noun] be [vb pp] [prep] to | 9 |
|
