SN4 ""

No	Pattern	Freq
1	at the expense of [noun pl]	122
2	at the [noun sg] of others	65
3	at the end of [noun pl]	39
4	at the level of [noun pl]	37
5	at the centre of [noun pl]	36
6	at the [noun sg] of things	29
7	at the number of [noun pl]	23
8	at the mercy of [noun pl]	20
9	at the [noun sg] of women	18
10	at the heart of [noun pl]	17
11	at the [noun sg] of events	14
12	at the range of [noun pl]	14
13	at the beginning of [noun pl]	13
14	at the forefront of [noun pl]	12
15	at the bottom of [noun pl]	11
16	at the [noun sg] of hostilities	11
17	at the request of [noun pl]	10
18	at the list of [noun pl]	10
19	at the society of [noun pl]	10
20	at the pile of [noun pl]	9
21	at the top of [noun pl]	9
22	at the lack of [noun pl]	9
23	at the kind of [noun pl]	9
24	at the [noun sg] of arts	8
25	at the time of [noun pl]	8
26	at the [noun sg] of words	8
27	at the [noun sg] of negotiations	7
28	at the [noun sg] of directors	7
29	at the [noun sg] of services	7
30	at the array of [noun pl]	7