SN4 ""

No	Pattern	Freq
1	[pers pn] [be] at a [noun]	218
2	[pers pn] be at a [noun]	218
3	[pers pn] [be] at a [noun sg]	214
4	[pers pn] [be] at a [noun]	206
5	[pers pn] [was/were] at a [noun]	136
6	[pers pn] was at a [noun]	116
7	i [be] at a [noun]	67
8	[pers pn] [am/are] at a [noun]	54
9	[pers pn] [be] at a loss	44
10	[pers pn] [be] at a loss	44
11	he [be] at a [noun]	40
12	it [be] at a [noun]	39
13	[pers pn] [is] at a [noun]	26
14	[pers pn] were at a [noun]	20
15	we [be] at a [noun]	20
16	[pers pn] are at a [noun]	18
17	you [be] at a [noun]	17
18	they [be] at a [noun]	17
19	[pers pn] [be] at a party	16
20	[pers pn] [be] at a party	16
21	[pers pn] [be] at a meeting	15
22	[pers pn] 're at a [noun]	15
23	she [be] at a [noun]	15
24	[pers pn] 's at a [noun]	15
25	[pers pn] [be] at a meeting	15
26	[pers pn] am at a [noun]	12
27	[pers pn] [be] at an [noun]	12
28	[pers pn] is at a [noun]	11
29	[pers pn] [be] at a disadvantage	11
30	[pers pn] [be] at a disadvantage	11