SN4 ""

No	Pattern	Freq
1	been [vb pp] for [adj] years	191
2	[been] [vb pp] for [num] years	114
3	[been] [vb pp] for [det] years	77
4	[been] [vb pp] for many years	54
5	[been] [vb pp] for many years	54
6	[been] jailed for [adj] years	29
7	[been] [vb pp] for some years	17
8	[been] [vb pp] for some years	17
9	[been] [vb pp] for two years	17
10	[been] [vb pp] for two years	17
11	[been] known for [adj] years	17
12	[been] [vb pp] for three years	16
13	[been] [vb pp] for three years	16
14	[been] used for [adj] years	15
15	[been] [vb pp] for five years	8
16	[been] [vb pp] for seven years	8
17	[been] [vb pp] for five years	8
18	[been] [vb pp] for seven years	8
19	[been] [vb pp] for 12 years	7
20	[been] [vb pp] for 12 years	7
21	[been] [vb pp] for several years	6
22	[been] separated for [adj] years	6
23	[been] [vb pp] for several years	6
24	[been] established for [adj] years	5
25	[been] [vb pp] for 20 years	5
26	[been] [vb pp] for four years	5
27	[been] [vb pp] for 20 years	5
28	[been] banned for [adj] years	5
29	[been] [vb pp] for ten years	5
30	[been] [vb pp] for ten years	5