| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] headquarters | 85 |
|
| 2 | [prep] un headquarters | 6 |
|
| 3 | at un [n mass] | 5 |
|
| 4 | at un [noun] | 5 |
|
| 5 | at un headquarters | 5 |
|
