| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [vb pp] [prep] reference to [art] | 10 |
|
| 2 | was [verb] [prep] reference to [art] | 10 |
|
| 3 | was [verb] [prep] reference to the | 8 |
|
| 4 | was [verb] [prep] reference to the | 8 |
|
| 5 | was [verb] with reference to [art] | 5 |
|
| 6 | was [verb] by reference to [art] | 5 |
|
