SN4 ""

No	Pattern	Freq
1	have been [vb pp] for [num] [noun pl]	191
2	has been [vb pp] for [adj] [noun pl]	164
3	have been [vb pp] for [adj] years	162
4	have been [vb pp] for [adj] [noun pl]	118
5	had been [vb pp] for [adj] [noun pl]	113
6	have been [vb pp] for [det] [noun pl]	110
7	have been [vb pp] for [adj] [noun pl]	92
8	have been [vb pp] for many [noun pl]	60
9	have been [vb pp] for many [noun pl]	60
10	have been [vb pp] for [adj] months	49
11	have been jailed for [adj] [noun pl]	48
12	have been used for [adj] [noun pl]	33
13	have been [vb pp] for three [noun pl]	32
14	have been [vb pp] for three [noun pl]	32
15	have been [vb pp] for two [noun pl]	27
16	have been [vb pp] for two [noun pl]	27
17	have been [vb pp] for some [noun pl]	22
18	have been [vb pp] for some [noun pl]	22
19	have been [vb pp] for [adj] purposes	19
20	have been [vb pp] for several [noun pl]	17
21	have been [vb pp] for several [noun pl]	17
22	have been [vb pp] for [adj] weeks	17
23	have been known for [adj] [noun pl]	16
24	have been [vb pp] for [adj] days	14
25	have been [vb pp] for [adj] reasons	13
26	have been [vb pp] for [adj] [noun pl]	12
27	have been suspended for [adj] [noun pl]	11
28	have been [vb pp] for five [noun pl]	11
29	have been [vb pp] for six [noun pl]	11
30	have been [vb pp] for five [noun pl]	11