SN4 ""

No	Pattern	Freq
1	[adj] at a [adj] [noun sg]	295
2	[adj] at a [adj] [noun]	265
3	[adj] at a [adj] [noun]	232
4	[adj] at a [adj] [noun]	190
5	[adj] at an [adj] [noun]	77
6	[num] at a [adj] [noun]	57
7	[det] at a [adj] [noun]	54
8	[adj] at a [adj] level	39
9	[adj] at a [adj] level	39
10	available at a [adj] [noun]	38
11	available at a [adj] [noun]	38
12	[adj] at a [adj -er] [noun]	36
13	[adj] at a [adj] stage	28
14	[adj] at a [adj] stage	28
15	[adj] at a early [noun]	25
16	[adj] at a [adj] price	20
17	[adj] at a [adj] price	20
18	[adj] at a early [noun]	19
19	[adj] at a [adj] time	15
20	[adj] at a [adj] cost	15
21	[adj] at a [adj] time	15
22	[adj] at a [adj] cost	15
23	[adj] at a later [noun]	14
24	[adj] at a [adj] date	14
25	[adj] at a [adj] date	14
26	[adj] at a late [noun]	14
27	all at a [adj] [noun]	13
28	all at a [adj] [noun]	13
29	[adj] at a low [noun]	12
30	[adj] at a [adj] rate	12