SN4 ""

No	Pattern	Freq
1	at the [adj] [noun] and	1037
2	at the [adj] [noun sg] [coord]	1012
3	at the [adj] [noun] [coord]	871
4	at the [adj] [noun pl] [coord]	181
5	at the [det] [noun] [coord]	171
6	at the [adj] time [coord]	171
7	at the same [noun] [coord]	165
8	at the same [noun] [coord]	165
9	at the [adj] time [coord]	164
10	at the [num ord] [noun] [coord]	122
11	at the [adj] [noun] or	102
12	at the [adj] [noun] but	84
13	at the [adj] level [coord]	60
14	at the [adj] level [coord]	53
15	at the right [noun] [coord]	48
16	at the right [noun] [coord]	48
17	at the last [noun] [coord]	47
18	at the last [noun] [coord]	47
19	at the [adj] end [coord]	45
20	at the [adj] end [coord]	45
21	at the [adj] rate [coord]	34
22	at the first [noun] [coord]	30
23	at the first [noun] [coord]	30
24	at the [adj] rate [coord]	29
25	at the [adj -est] [noun] [coord]	28
26	at the [adj] [noun prp] [coord]	28
27	at the [adj] moment [coord]	26
28	at the [adj] moment [coord]	26
29	at the old [noun] [coord]	24
30	at the old [noun] [coord]	24