SN4 ""

No	Pattern	Freq
1	at the [adj] [noun] and	748
2	at the [adj] [noun sg] [coord]	691
3	at the [adj] [noun pl] [coord]	149
4	at the [adj] time [coord]	65
5	at the [adj] [noun] or	63
6	at the [adj] time [coord]	60
7	at the [adj] [noun] but	53
8	at the right [noun] [coord]	48
9	at the [adj] end [coord]	40
10	at the [adj] end [coord]	40
11	at the [adj] level [coord]	38
12	at the [adj] level [coord]	36
13	at the [adj] [noun prp] [coord]	24
14	at the old [noun] [coord]	24
15	at the royal [noun] [coord]	21
16	at the other [noun] [coord]	19
17	at the national [noun] [coord]	18
18	at the [adj] rate [coord]	17
19	at the local [noun] [coord]	17
20	at the wrong [noun] [coord]	16
21	at the front [noun] [coord]	15
22	at the [adj] rate [coord]	15
23	at the new [noun] [coord]	13
24	at the [adj] stage [coord]	13
25	at the [adj] stage [coord]	12
26	at the present [noun] [coord]	12
27	at the [adj] door [coord]	11
28	at the [adj] door [coord]	11
29	at the [adj] table [coord]	10
30	at the [adj] point [coord]	10