SN4 ""

No	Pattern	Freq
1	[noun] [prep] years	2792
2	[noun sg] [prep] years	2429
3	couple [prep] years	854
4	couple [prep] years	854
5	[adj] [prep] years	814
6	[verb] [prep] years	745
7	[num] [prep] years	587
8	number [prep] years	584
9	number [prep] years	581
10	[vb pp] [prep] years	392
11	[adv] [prep] years	348
12	[pron] [prep] years	282
13	[noun pl] [prep] years	266
14	[pers pn] [prep] years	231
15	thousands [prep] years	225
16	thousands [prep] years	225
17	hundreds [prep] years	186
18	hundreds [prep] years	186
19	[adv] [prep] years	180
20	[adv prt] [prep] years	149
21	[adj] [prep] years	147
22	millions [prep] years	142
23	millions [prep] years	142
24	[v-ing] [prep] years	123
25	it [prep] years	91
26	it [prep] years	91
27	period [prep] years	89
28	[conj] [prep] years	88
29	period [prep] years	86
30	[noun prp] [prep] years	85