| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and reference should [be] made to | 11 |
|
| 2 | and reference should be [vb pp] to | 11 |
|
| 3 | and reference should [be] [vb pp] to | 11 |
|
| 4 | and reference should [be] [vb pp] to | 11 |
|
| 5 | and reference should be [vb pp] to | 11 |
|
