SN4 ""

No	Pattern	Freq
1	[adv] at a [adj] [noun sg]	628
2	[adv] at a [adj] [noun sg]	568
3	[adv] at a [adj] [noun sg]	438
4	[adv prt] at a [adj] [noun sg]	261
5	[adv] at an [adj] [noun sg]	146
6	[adv] at a [adj -er] [noun sg]	82
7	[adv] at a [adj] level	67
8	[adv] at a [adj] stage	53
9	[adv] at a [adj] rate	50
10	up at a [adj] [noun sg]	50
11	up at a [adj] [noun sg]	50
12	out at a [adj] [noun sg]	47
13	out at a [adj] [noun sg]	47
14	off at a [adj] [noun sg]	43
15	off at a [adj] [noun sg]	43
16	[adv] at a [adj] pace	42
17	[adv] at a late [noun sg]	40
18	[adv] at a later [noun sg]	39
19	[adv] at a early [noun sg]	37
20	[adv] at a [adj] time	36
21	[adv] at a early [noun sg]	34
22	[adv] at a [adj] date	29
23	in at a [adj] [noun sg]	27
24	in at a [adj] [noun sg]	27
25	[adv] at a [adj] angle	25
26	[adv] at a low [noun sg]	24
27	[adv] at a high [noun sg]	23
28	only at a [adj] [noun sg]	21
29	back at a [adj] [noun sg]	21
30	down at a [adj] [noun sg]	21