SN4 ""

No	Pattern	Freq
1	[to-vb] at [det] [noun sg]	430
2	[to-vb] at this [noun]	179
3	to look at [det] [noun]	123
4	[to-vb] at [det] [noun pl]	108
5	[to-vb] at [det] time	86
6	[to-vb] at any [noun]	80
7	[to-vb] at that [noun]	79
8	[to-vb] at [det] time	67
9	[to-vb] at some [noun]	64
10	[to-vb] at [det] stage	61
11	[to-vb] at [det] stage	61
12	[to-vb] at [det] point	52
13	[to-vb] at [det] point	51
14	[to-vb] at all [noun]	43
15	[to-vb] at each [noun]	33
16	[to-vb] at [det] level	28
17	[to-vb] at [det] moment	22
18	[to-vb] at these [noun]	22
19	[to-vb] at [det] moment	22
20	[to-vb] at [det] times	19
21	[to-vb] at [det] level	19
22	to do at [det] [noun]	18
23	[to-vb] at [det] other	18
24	to say at [det] [noun]	18
25	to arrive at [det] [noun]	18
26	[to-vb] at [det] other	17
27	[to-vb] at another [noun]	15
28	[to-vb] at such [noun]	14
29	[to-vb] at [det] cost	13
30	to work at [det] [noun]	12