| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | referred [prep] at [art] [noun] of | 6 |
|
| 2 | referred [prep] at [art] [noun] [prep] | 6 |
|
| 3 | referred [prep] at [art] [noun] [prep] | 6 |
|
| 4 | referred [prep] at [art] [noun] of | 6 |
|
