SN4 ""

No	Pattern	Freq
1	[noun pl] at all [noun pl]	291
2	[noun pl] at [det] levels	166
3	[noun pl] at [det] times	63
4	[noun pl] at both [noun pl]	55
5	[noun pl] at these [noun pl]	44
6	[noun pl] at [det] ends	29
7	[noun pl] at [det] stages	25
8	[noun pl] at some [noun pl]	19
9	[noun pl] at several [noun pl]	17
10	[noun pl] at [det] sites	16
11	employees at [det] [noun pl]	13
12	[noun pl] at [det] ages	13
13	[noun pl] at [det] costs	12
14	[noun pl] at [det] points	12
15	managers at [det] [noun pl]	12
16	[noun pl] at many [noun pl]	12
17	[noun pl] at such [noun pl]	12
18	[noun pl] at those [noun pl]	11
19	[noun pl] at most [noun pl]	10
20	students at [det] [noun pl]	8
21	pupils at [det] [noun pl]	7
22	[noun pl] at [det] hours	7
23	[noun pl] at [det] universities	7
24	officers at [det] [noun pl]	6
25	rates at [det] [noun pl]	6
26	workers at [det] [noun pl]	6
27	children at [det] [noun pl]	6
28	women at [det] [noun pl]	6
29	members at [det] [noun pl]	5
30	[noun pl] at [det] places	5