SN4 ""

No	Pattern	Freq
1	[noun] [verb] at a [noun sg]	756
2	[noun sg] [verb] at a [noun sg]	463
3	[noun pl] [verb] at a [noun sg]	224
4	[noun] [vb past] at a [noun sg]	210
5	[noun] [vb pp] at a [noun sg]	205
6	[noun] [v-ing] at a [noun sg]	130
7	[noun] [vb -s] at a [noun sg]	129
8	[noun prp] [verb] at a [noun sg]	126
9	[noun] [verb] at a time	98
10	[noun] [to-vb] at a [noun sg]	89
11	[noun] [verb] at an [noun sg]	77
12	[noun] come at a [noun sg]	67
13	[noun] [vb base] at a [noun sg]	66
14	[noun] look at a [noun sg]	52
15	[noun] [verb] at a rate	39
16	[noun] arrive at a [noun sg]	36
17	[noun] comes at a [noun sg]	33
18	[noun] sit at a [noun sg]	29
19	[noun] came at a [noun sg]	28
20	[noun] [verb] at a table	27
21	[noun] [verb] at a meeting	25
22	[noun] occur at a [noun sg]	25
23	[noun] [verb] at a angle	22
24	[n mass] [verb] at a [noun sg]	18
25	[noun] [verb] at a distance	17
26	[noun] stand at a [noun sg]	16
27	[noun] say at a [noun sg]	15
28	[noun] looks at a [noun sg]	15
29	[noun] to arrive at a [noun sg]	15
30	[noun] sat at a [noun sg]	14