SN4 ""

No	Pattern	Freq
1	[be] at the [noun] [prep]	315
2	be at the [noun] [prep]	315
3	[be] at the [noun sg] [prep]	300
4	[be] at the [noun] of	265
5	[be] at the expense [prep]	30
6	[be] at the end [prep]	30
7	[be] at the expense [prep]	30
8	[be] at the end [prep]	29
9	[be] at the heart [prep]	26
10	[be] at the heart [prep]	26
11	[be] at the forefront [prep]	24
12	[be] at the forefront [prep]	24
13	[be] at the mercy [prep]	23
14	[be] at the mercy [prep]	23
15	[be] at the centre [prep]	22
16	[be] at the centre [prep]	22
17	[be] at the top [prep]	16
18	[be] at the top [prep]	16
19	[be] at the root [prep]	13
20	[be] at the [noun] in	13
21	[be] at the root [prep]	13
22	[be] at the [noun pl] [prep]	9
23	[be] at the [noun] by	8
24	[be] at the [noun] at	7
25	[be] at the beginning [prep]	7
26	[be] at the bottom [prep]	7
27	[be] at the beginning [prep]	7
28	[be] at the bottom [prep]	7
29	[be] at the [noun] for	6
30	[be] at the [noun prp] [prep]	5