| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] been referred to | 42 |
|
| 2 | [adv] be referred to | 40 |
|
| 3 | already be referred to | 21 |
|
| 4 | [adv] being referred to | 13 |
|
| 5 | also be referred to | 13 |
|
| 6 | then be referred to | 8 |
|
| 7 | often be referred to | 6 |
|
| 8 | now be referred to | 6 |
|
| 9 | still be referred to | 5 |
|
| 10 | [adv] is referred to | 5 |
|
