| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb mod] [be] [vb pp] [prep] [art] | 18423 |
|
| 2 | reference [modal v] [be] [vb pp] [prep] [art] | 38 |
|
| 3 | reference [vb mod] [be] [verb] [prep] [art] | 38 |
|
