SN4 ""

No	Pattern	Freq
1	[vb pp] in [adj] years	563
2	[verb] in [adj] years	528
3	[verb] in recent years	418
4	[verb] in recent years	418
5	[verb] in [num] years	227
6	[v-ing] in [adj] years	60
7	have in [adj] years	58
8	[vb -s] in [adj] years	48
9	[vb past] in [adj] years	48
10	[vb base] in [adj] years	46
11	[verb] in [det] years	41
12	[to-vb] in [adj] years	37
13	[verb] in [adj -er] years	33
14	[verb] in previous years	32
15	[verb] in previous years	32
16	[verb] in two years	30
17	[verb] in two years	30
18	[vb infin] in [adj] years	28
19	[verb] in five years	27
20	[verb] in five years	27
21	increase in [adj] years	26
22	change in [adj] years	25
23	changed in [adj] years	25
24	do in [adj] years	24
25	make in [adj] years	23
26	made in [adj] years	23
27	decline in [adj] years	23
28	[verb] in later years	22
29	has in [adj] years	22
30	[verb] in late years	22