| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] headquarters | 85 |
|
| 2 | at [noun prp] headquarters | 49 |
|
| 3 | at [noun sg] headquarters | 23 |
|
| 4 | at police headquarters | 12 |
|
| 5 | at police headquarters | 12 |
|
| 6 | at [noun pl] headquarters | 12 |
|
| 7 | at group headquarters | 6 |
|
| 8 | at group headquarters | 6 |
|
| 9 | at army headquarters | 5 |
|
| 10 | at un headquarters | 5 |
|
| 11 | at army headquarters | 5 |
|
| 12 | at un headquarters | 5 |
|
