SN4 ""

No	Pattern	Freq
1	at [det] [noun sg]	20645
2	at this [noun sg]	8102
3	at [det] time	6299
4	at that [noun sg]	5165
5	at any [noun sg]	3271
6	at [det] stage	2840
7	at [det] point	2492
8	at each [noun sg]	1686
9	at some [noun sg]	1557
10	at [det] moment	1267
11	at [det] rate	782
12	at [det] other	672
13	at [det] level	592
14	at [det] end	431
15	at another [noun sg]	246
16	at [det] age	226
17	at either [noun sg]	207
18	at [det] period	182
19	at [det] meeting	174
20	at [det] price	160
21	at [det] length	152
22	at [det] hour	152
23	at half [noun sg]	140
24	at [det] year	129
25	at [det] distance	117
26	at [det] side	103
27	at [det] date	100
28	at [det] juncture	99
29	at such [noun sg]	84
30	at [det] place	73