SN4 ""

No	Pattern	Freq
1	had been [verb] for [adj] years	80
2	had been [verb] [prep] [num] years	59
3	had been [vb pp] [prep] [adj] years	57
4	had been [v-ing] [prep] [adj] years	45
5	had been [verb] [prep] [det] years	37
6	had been [verb] [prep] many years	18
7	had been [verb] [prep] many years	18
8	had been [verb] to [adj] years	12
9	had been sentence [prep] [adj] years	12
10	had been sentenced [prep] [adj] years	12
11	had been [verb] [prep] some years	11
12	had been [verb] [prep] some years	11
13	had been [verb] [prep] two years	8
14	had been [verb] [prep] several years	8
15	had been [verb] [prep] several years	8
16	had been [verb] [prep] two years	8
17	had been [verb] [prep] seven years	7
18	had been [verb] [prep] seven years	7
19	had been [verb] [prep] thirty years	6
20	had been [verb] [prep] thirty years	6
21	had been [verb] in [adj] years	5
22	had been [verb] [prep] three years	5
23	had been [verb] [prep] three years	5