| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] to the | 534 |
|
| 2 | had been [vb pp] to the | 508 |
|
| 3 | have been referred to the | 26 |
|
| 4 | [verb] been referred to the | 26 |
|
| 5 | had been referred to [art] | 15 |
|
| 6 | [vb past] been referred to the | 11 |
|
| 7 | had been referred [prep] the | 11 |
|
| 8 | had [be] referred to the | 11 |
|
| 9 | had been referred to the | 11 |
|
| 10 | had be referred to the | 11 |
|
| 11 | had [been] referred to the | 11 |
|
| 12 | had been referred [prep] the | 11 |
|
| 13 | had been refer to the | 11 |
|
