SN4 ""

No	Pattern	Freq
1	[verb] at a [noun] [prep]	1539
2	[verb] at a [noun] [prep]	1539
3	[verb] at a [noun sg] [prep]	1527
4	[verb] at a [noun] of	852
5	[verb] at a [noun] of	852
6	[vb pp] at a [noun] [prep]	622
7	[v-ing] at a [noun] [prep]	343
8	[verb] at a [noun] in	262
9	[verb] at a [noun] in	262
10	[vb past] at a [noun] [prep]	245
11	look at a [noun] [prep]	168
12	[verb] at a meeting [prep]	142
13	[verb] at a meeting [prep]	142
14	[verb] at a rate [prep]	123
15	[verb] at a rate [prep]	123
16	[to-vb] at a [noun] [prep]	101
17	[verb] at a [noun] on	100
18	[verb] at a [noun] on	100
19	[vb base] at a [noun] [prep]	82
20	[vb -s] at a [noun] [prep]	76
21	[verb] at a cost [prep]	70
22	[vb infin] at a [noun] [prep]	70
23	[verb] at a cost [prep]	70
24	looking at a [noun] [prep]	70
25	arrive at a [noun] [prep]	69
26	[verb] at a time [prep]	64
27	[verb] at a time [prep]	64
28	[verb] at a number [prep]	60
29	[verb] at a number [prep]	60
30	[verb] at a table [prep]	54