SN4 ""

No	Pattern	Freq
1	[verb] [vb pp] [prep] the years	193
2	have [vb pp] [prep] the years	192
3	[be] [vb pp] [prep] the years	91
4	be [vb pp] [prep] the years	91
5	[vb base] [vb pp] [prep] the years	80
6	have [vb pp] [prep] the years	69
7	has [vb pp] [prep] the years	65
8	[vb -s] [vb pp] [prep] the years	65
9	[been] [vb pp] [prep] the years	63
10	been [vb pp] [prep] the years	63
11	[noun] [vb pp] [prep] the years	57
12	[adv] [vb pp] [prep] the years	53
13	[adv] [vb pp] [prep] the years	47
14	[vb past] [vb pp] [prep] the years	39
15	had [vb pp] [prep] the years	33
16	[noun sg] [vb pp] [prep] the years	29
17	[noun pl] [vb pp] [prep] the years	27
18	[conj] [vb pp] [prep] the years	21
19	[coord] [vb pp] [prep] the years	19
20	[was/were] [vb pp] [prep] the years	17
21	and [vb pp] [prep] the years	17
22	and [vb pp] [prep] the years	17
23	were [vb pp] [prep] the years	12
24	've [vb pp] [prep] the years	11
25	not [vb pp] [prep] the years	6
26	not [vb pp] [prep] the years	6
27	have [vb pp] [prep] the years	6
28	[not/n't] [vb pp] [prep] the years	6
29	[vb infin] [vb pp] [prep] the years	6
30	[is] [vb pp] [prep] the years	6