SN4 ""

No	Pattern	Freq
1	at [adj] [adv] [prep]	684
2	at [num] [adv] [prep]	642
3	at [adj] o'clock [prep]	322
4	at [adj] o'clock [prep]	322
5	at [adj] [adv] in	268
6	at [adj] [adv] on	215
7	at [adj] p.m. [prep]	84
8	at [adj] p.m. [prep]	84
9	at [adj] a.m. [prep]	72
10	at [adj] a.m. [prep]	72
11	at [adj] pm [prep]	68
12	at [adj] pm [prep]	68
13	at [adj] [adv] at	67
14	at [det] [adv] [prep]	57
15	at [adj] am [prep]	55
16	at [adj] am [prep]	55
17	at all [adv] [prep]	43
18	at all [adv] [prep]	43
19	at [adj] [adv prt] [prep]	40
20	at 7.30 [adv] [prep]	39
21	at 7.30 [adv] [prep]	39
22	at ten [adv] [prep]	37
23	at ten [adv] [prep]	37
24	at [adj] [adv] for	37
25	at three [adv] [prep]	37
26	at three [adv] [prep]	37
27	at two [adv] [prep]	35
28	at two [adv] [prep]	35
29	at six [adv] [prep]	32
30	at six [adv] [prep]	32