| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must be referred to | 10 |
|
| 2 | [noun sg] must be referred to | 7 |
|
| 3 | must be referred to the | 7 |
|
| 4 | must be referred to the | 7 |
|
| 5 | must be referred to [art] | 7 |
|
| 6 | must be referred to [art] | 7 |
|
| 7 | must be referred to [noun] | 5 |
|
