SN4 ""

No	Pattern	Freq
1	[noun sg] at a [noun]	3731
2	[noun sg] at a [noun sg]	3463
3	[noun sg] at a time	912
4	[noun sg] at a time	912
5	[noun sg] at a [noun prp]	186
6	[noun sg] at a cost	116
7	[noun sg] at a cost	116
8	[noun sg] at a meeting	115
9	[noun sg] at a meeting	115
10	[noun sg] at a rate	87
11	[noun sg] at a rate	87
12	[noun sg] at a distance	83
13	[noun sg] at a distance	83
14	[noun sg] at a house	66
15	[noun sg] at a house	66
16	[noun sg] at a price	56
17	[noun sg] at a price	56
18	[noun sg] at a [noun pl]	55
19	attempt at a [noun]	54
20	[noun sg] at a party	53
21	[noun sg] at a party	53
22	place at a [noun]	48
23	[noun sg] at a level	47
24	[noun sg] at a level	47
25	[noun sg] at a point	40
26	[noun sg] at a point	40
27	step at a [noun]	38
28	week at a [noun]	37
29	[noun sg] at a conference	36
30	day at a [noun]	36