SN4 ""

No	Pattern	Freq
1	[verb] been [vb pp] at a [noun]	66
2	have been [vb pp] at a [noun]	66
3	[vb -s] been [vb pp] at a [noun]	23
4	has been [vb pp] at a [noun]	22
5	had been [vb pp] at a [noun]	21
6	[vb past] been [vb pp] at a [noun]	21
7	have been [vb pp] at a [noun]	14
8	[vb base] been [vb pp] at a [noun]	14
9	[adv] been [vb pp] at a [noun]	6
10	[adv] been [vb pp] at a [noun]	6
11	have been [vb pp] at a [noun]	5
12	[vb infin] been [vb pp] at a [noun]	5
13	been [vb pp] [adv] at a [noun]	10
14	been [vb pp] [adv prt] at a [noun]	7
15	been [vb pp] [verb] at a [noun]	7
16	been [vb pp] [to-vb] at a [noun]	7
17	been [vb pp] at [n mass] a [noun]	5
18	been [vb pp] at [noun] a [noun]	5
19	been [vb pp] at a [adj] [noun]	60
20	been [vb pp] at a [adj] [noun]	44
21	been [vb pp] at a [adj -er] [noun]	15
22	been [vb pp] at a [noun] [noun]	12
23	been [vb pp] at a [noun sg] [noun]	9
24	been [vb pp] at a early [noun]	6
25	been [vb pp] at a late [noun]	5
26	been [vb pp] at a later [noun]	5
27	been [vb pp] at a [noun] [prep]	43
28	been [vb pp] at a [noun] [prep]	43
29	been [vb pp] at a [noun] of	28
30	been [vb pp] at a [noun] of	28