SN4 ""

No	Pattern	Freq
1	[verb] at least	3916
2	[vb pp] at [adv]	1737
3	[vb past] at [adv]	1391
4	[verb] at once	1025
5	[vb infin] at [adv]	966
6	[v-ing] at [adv]	956
7	[to-vb] at [adv]	831
8	[vb base] at [adv]	801
9	[vb -s] at [adv]	776
10	have at [adv]	684
11	look at [adv]	340
12	[verb] at about	316
13	[verb] at around	262
14	start at [adv]	250
15	had at [adv]	209
16	take at [adv]	162
17	do at [adv]	141
18	have at [adv]	129
19	know at [adv]	125
20	has at [adv]	120
21	[verb] at more	119
22	have at [adv]	116
23	[verb] at just	115
24	run at [adv]	112
25	looked at [adv]	106
26	see at [adv]	106
27	need at [adv]	100
28	estimate at [adv]	98
29	looking at [adv]	96
30	say at [adv]	95