SN4 ""

No	Pattern	Freq
1	at the [noun] [adj] [noun sg]	498
2	at the [noun prp] [adj] [noun sg]	449
3	at the [noun sg] [adj] [noun sg]	370
4	at the [noun] [det] [noun sg]	158
5	at the [noun] [num] [noun sg]	110
6	at the [noun] [num ord] [noun sg]	98
7	at the [noun] this [noun sg]	86
8	at the [noun] this [noun sg]	86
9	at the [noun] last [noun sg]	66
10	at the [noun] last [noun sg]	66
11	at the [noun] [adj] night	43
12	at the [noun] that [noun sg]	40
13	at the [noun] that [noun sg]	40
14	at the [noun pl] [adj] [noun sg]	36
15	at the [noun] international [noun sg]	33
16	at the [noun] international [noun sg]	33
17	at the [noun] national [noun sg]	31
18	at the [noun] national [noun sg]	31
19	at the [noun] [adj] year	30
20	at the [noun] [adj] school	27
21	at the [noun] [adj] week	26
22	at the time [adj] [noun sg]	24
23	at the time [adj] [noun sg]	24
24	at the [noun] [adj] morning	23
25	at the [noun] nuclear [noun sg]	23
26	at the [noun] nuclear [noun sg]	23
27	at the [noun] [adj] centre	22
28	at the [noun] [adj] meeting	21
29	at the [noun] [adj] hospital	21
30	at the [noun] one [noun sg]	21