SN4 ""

No	Pattern	Freq
1	[noun] at [noun] headquarters	56
2	[noun sg] at [noun] headquarters	29
3	[noun pl] at [noun] headquarters	16
4	[verb] at [noun] headquarters	12
5	[vb pp] at [noun] headquarters	11
6	[noun prp] at [noun] headquarters	9
7	at the [noun] headquarters	43
8	at [art] [noun] headquarters	43
9	at [art] [noun] headquarters	43
10	at the [noun] headquarters	43
11	at [pron] [noun] headquarters	33
12	at [pos pn] [noun] headquarters	32
13	at [adj] [noun] headquarters	18
14	at [noun] [noun] headquarters	15
15	at its [noun] headquarters	14
16	at its [noun] headquarters	14
17	at [noun prp] [noun] headquarters	13
18	at [adj] [noun] headquarters	13
19	at their [noun] headquarters	11
20	at their [noun] headquarters	11
21	at [noun] [unc] headquarters	22
22	at [noun] ['s] headquarters	21
23	at [noun] 's headquarters	20
24	at [noun] 's headquarters	20
25	at [noun] [noun] headquarters	15
26	at [noun] police headquarters	6
27	at [noun] police headquarters	6
28	at [noun] [noun pl] headquarters	6
29	at [noun] [noun prp] headquarters	5
30	at [noun] headquarters [prep]	35