SN4 ""

No	Pattern	Freq
1	have been [adj] [prep] years	26
2	[verb] been [adj] [prep] years	26
3	had been [adj] [prep] years	14
4	[vb past] been [adj] [prep] years	14
5	[vb -s] been [adj] [prep] years	7
6	[vb base] been [adj] [prep] years	5
7	been [adj] [prep] [adj] years	138
8	been [adj] [prep] [num] years	81
9	been [adj] [prep] [det] years	43
10	been [adj] [prep] many years	19
11	been [adj] [prep] many years	19
12	been [adj] [prep] [adj] years	14
13	been [adj] [prep] some years	12
14	been [adj] [prep] some years	12
15	been [adj] [prep] recent years	12
16	been [adj] [prep] recent years	12
17	been [adj] [prep] several years	10
18	been [adj] [prep] several years	10
19	been [adj] [prep] five years	6
20	been [adj] [prep] six years	6
21	been [adj] [prep] six years	6
22	been [adj] [prep] [art] years	6
23	been [adj] [prep] [art] years	6
24	been [adj] [prep] four years	6
25	been [adj] [prep] the years	6
26	been [adj] [prep] five years	6
27	been [adj] [prep] four years	6
28	been [adj] [prep] the years	6
29	been [adj] [prep] twenty years	5
30	been [adj] [prep] twenty years	5