| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has referred to [art] | 9 |
|
| 2 | [noun sg] has referred to [art] | 6 |
|
| 3 | has been referred to [art] | 12 |
|
| 4 | has be referred to [art] | 12 |
|
| 5 | has [been] referred to [art] | 12 |
|
| 6 | has [be] referred to [art] | 12 |
|
| 7 | has referred to [art] [noun] | 5 |
|
