SN4 ""

No	Pattern	Freq
1	the [noun] office	3547
2	the [noun sg] office	3100
3	the home office	943
4	the home office	943
5	the post office	752
6	the post office	752
7	the [noun prp] office	305
8	the box office	124
9	the box office	124
10	the war office	119
11	the war office	119
12	the cabinet office	108
13	the cabinet office	108
14	the [noun pl] office	99
15	the met office	68
16	the met office	68
17	the ticket office	47
18	the ticket office	47
19	the tourist office	44
20	the london office	44
21	the tourist office	44
22	the london office	44
23	the [n mass] office	43
24	the reception office	35
25	the reception office	35
26	the court office	30
27	the court office	30
28	the patent office	30
29	the patent office	30
30	the information office	28