SN4 ""

No	Pattern	Freq
1	at the [noun sg] [noun sg]	7941
2	at the [noun sg] [noun pl]	1018
3	at the [noun sg] [noun prp]	605
4	at the [noun sg] end	356
5	at the [noun sg] end	352
6	at the [noun sg] office	288
7	at the [noun sg] office	266
8	at the [noun sg] stage	259
9	at the [noun sg] stage	249
10	at the [noun sg] table	241
11	at the [noun sg] table	233
12	at the [noun sg] centre	218
13	at the [noun sg] centre	211
14	at the [noun sg] level	206
15	at the [noun sg] level	205
16	at the [noun sg] ground	176
17	at the [noun sg] ground	171
18	at the [noun sg] hall	159
19	at the [noun sg] hall	154
20	at the time [noun]	134
21	at the county [noun]	132
22	at the north [noun]	126
23	at the [noun sg] door	125
24	at the [noun sg] station	124
25	at the kitchen [noun]	122
26	at the [noun sg] door	121
27	at the moment [noun]	107
28	at the [noun sg] station	107
29	at the [noun sg] conference	106
30	at the [noun sg] conference	106