SN4 ""

No	Pattern	Freq
1	at the [adj] [noun sg] [noun]	2813
2	at the [adj] [noun sg] [noun sg]	2181
3	at the [adj] [noun sg] [noun]	2123
4	at the [adj] [noun sg] [noun pl]	385
5	at the [det] [noun sg] [noun]	309
6	at the same [noun sg] [noun]	293
7	at the same [noun sg] [noun]	293
8	at the [adj] time [noun]	268
9	at the [num ord] [noun sg] [noun]	224
10	at the [adj] [noun sg] [noun prp]	214
11	at the [adj] [noun sg] conference	125
12	at the [adj] [noun sg] conference	124
13	at the [adj] party [noun]	114
14	at the royal [noun sg] [noun]	112
15	at the royal [noun sg] [noun]	112
16	at the national [noun sg] [noun]	108
17	at the national [noun sg] [noun]	108
18	at the [num] [noun sg] [noun]	99
19	at the [adj] [noun sg] level	76
20	at the local [noun sg] [noun]	75
21	at the local [noun sg] [noun]	75
22	at the [adj] [noun sg] level	64
23	at the [adj] [noun sg] centre	64
24	at the [adj] [noun sg] centre	60
25	at the next [noun sg] [noun]	52
26	at the old [noun sg] [noun]	52
27	at the next [noun sg] [noun]	52
28	at the [adj] [noun sg] rate	50
29	at the old [noun sg] [noun]	50
30	at the [adj] [noun sg] stage	48