SN4 ""

No	Pattern	Freq
1	at the [adj -est] [noun sg] [prep]	193
2	at the [adj -est] [noun sg] of	106
3	at the [adj -est] [noun sg] of	106
4	at the highest [noun sg] [prep]	52
5	at the [adj -est] level [prep]	49
6	at the lowest [noun sg] [prep]	36
7	at the [adj -est] [noun sg] in	35
8	at the [adj -est] [noun sg] in	35
9	at the [adj -est] point [prep]	29
10	at the [adj -est] end [prep]	16
11	at the slightest [noun sg] [prep]	13
12	at the latest [noun sg] [prep]	11
13	at the [adj -est] [noun sg] for	11
14	at the best [noun sg] [prep]	11
15	at the [adj -est] [noun sg] for	11
16	at the [adj -est] [noun sg] on	10
17	at the [adj -est] [noun sg] on	10
18	at the earliest [noun sg] [prep]	9
19	at the [adj -est] opportunity [prep]	7
20	at the [adj -est] sign [prep]	7
21	at the [adj -est] rate [prep]	7
22	at the [adj -est] part [prep]	7
23	at the nearest [noun sg] [prep]	7
24	at the [adj -est] [noun sg] from	5
25	at the [adj -est] hotel [prep]	5
26	at the furthest [noun sg] [prep]	5
27	at the worst [noun sg] [prep]	5
28	at the [adj -est] [noun sg] from	5