| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been referred to [prep] | 32 |
|
| 2 | have been referred to [prep] | 32 |
|
| 3 | [vb -s] been referred to [prep] | 18 |
|
| 4 | has been referred to [prep] | 17 |
|
| 5 | [verb] been referred to as | 14 |
|
| 6 | [verb] been referred to as | 14 |
|
| 7 | [verb] been referred to in | 11 |
|
| 8 | [verb] been referred to in | 11 |
|
| 9 | [vb past] been referred to [prep] | 7 |
|
| 10 | had been referred to [prep] | 7 |
|
| 11 | [verb] been referred to by | 5 |
|
| 12 | [verb] been referred to by | 5 |
|
