SN4 ""

No	Pattern	Freq
1	been [verb] for [adj] years	336
2	been [verb] for [num] years	222
3	been [vb pp] for [adj] years	191
4	been [v-ing] for [adj] years	145
5	been [verb] for [det] years	114
6	been [verb] for many years	68
7	been [verb] for many years	68
8	been [verb] for three years	29
9	been jailed for [adj] years	29
10	been [verb] for three years	29
11	been [verb] for two years	29
12	been [verb] for two years	29
13	been jail for [adj] years	29
14	been [verb] for some years	26
15	been [verb] for some years	26
16	been run for [adj] years	23
17	been running for [adj] years	21
18	been [verb] for several years	20
19	been [verb] for several years	20
20	been know for [adj] years	17
21	been known for [adj] years	17
22	been [verb] for five years	16
23	been use for [adj] years	16
24	been [verb] for five years	16
25	been used for [adj] years	15
26	been go for [adj] years	13
27	been [verb] for seven years	12
28	been [verb] for seven years	12
29	been going for [adj] years	12
30	been [verb] for ten years	11