| No | Pattern | Freq | Relations |
|---|---|---|---|
| 31 | borough engineer | 5 |
|
| 32 | borough authority | 5 |
|
| 33 | borough status | 5 |
|
| 34 | borough status | 5 |
|
| 35 | borough boundary | 5 |
|
| 36 | borough engineer | 5 |
|
