SN4 ""

No	Pattern	Freq
1	[noun] had [prep] years	8
2	[pers pn] had [prep] years	5
3	[pron] had [prep] years	5
4	had [verb] [prep] years	33
5	had [vb pp] [prep] years	33
6	had know [prep] years	6
7	had known [prep] years	6
8	had [be] [prep] years	6
9	had been [prep] years	6
10	had [been] [prep] years	6
11	had be [prep] years	6
12	had [prep] [adj] years	46
13	had [prep] [det] years	28
14	had [prep] many years	18
15	had [prep] many years	18
16	had [prep] [adj] years	10
17	had [prep] [num] years	8
18	had [prep] recent years	8
19	had [prep] recent years	8
20	had [prep] several years	6
21	had [prep] several years	6
22	had [prep] years [verb]	5
23	had [prep] years [vb past]	5