SN4 ""

No	Pattern	Freq
1	have been [vb pp] at [noun prp]	231
2	had been [vb pp] at [noun]	145
3	have been [vb pp] at [noun sg]	140
4	has been [vb pp] at [noun]	139
5	have been [vb pp] at [noun]	114
6	have been [vb pp] at [n mass]	50
7	have been [vb pp] at [noun pl]	36
8	have been [vb pp] at [noun]	22
9	have been found at [noun]	20
10	have been made at [noun]	20
11	to have been [vb pp] at [noun]	15
12	have been held at [noun]	15
13	have been [vb pp] at home	14
14	have been [vb pp] at home	14
15	have been [vb pp] at sea	12
16	have been [vb pp] at sea	12
17	have been [vb pp] at length	12
18	have been [vb pp] at length	12
19	have been educated at [noun]	11
20	have been arrested at [noun]	11
21	having been [vb pp] at [noun]	10
22	have been born at [noun]	10
23	have been established at [noun]	9
24	have been recorded at [noun]	9
25	have been [vb pp] at time	9
26	have been [vb pp] at times	8
27	have been put at [noun]	8
28	have been [vb pp] at gunpoint	7
29	have been discussed at [noun]	7
30	'd been [vb pp] at [noun]	7