SN4 ""

No	Pattern	Freq
1	[noun sg] [noun] at the [noun sg]	3900
2	[noun] [noun sg] at the [noun sg]	3507
3	[noun prp] [noun] at the [noun sg]	1222
4	[noun] [noun pl] at the [noun sg]	1045
5	[noun] [noun prp] at the [noun sg]	804
6	[noun] [noun] at the end	629
7	[noun] [noun] at the time	405
8	[noun] [noun] at the university	217
9	[noun] [noun] at the moment	191
10	[noun pl] [noun] at the [noun sg]	187
11	[noun] [noun] at the beginning	163
12	[noun] [noun] at the back	141
13	[noun] [noun] at the top	135
14	[noun] [noun] at the age	113
15	[noun] [noun] at the weekend	101
16	[noun] [noun] at the start	85
17	[n mass] [noun] at the [noun sg]	81
18	[noun] [noun] at the centre	75
19	[noun] [noun] at the bottom	71
20	[noun] [noun] at the expense	69
21	[noun] [noun] at the front	53
22	[noun] [noun] at the institute	48
23	[noun] [noun] at the foot	47
24	[noun] [n mass] at the [noun sg]	46
25	[noun] system at the [noun sg]	46
26	[letter] [noun] at the [noun sg]	46
27	[noun] officer at the [noun sg]	44
28	[noun] [noun] at the rear	44
29	[noun] room at the [noun sg]	42
30	research [noun] at the [noun sg]	41