SN4 ""

No	Pattern	Freq
1	[noun sg] [prep] three years	444
2	[noun sg] for three years	176
3	[noun sg] for three years	176
4	[noun sg] of three years	119
5	[noun sg] of three years	119
6	[noun sg] in three years	67
7	[noun sg] in three years	67
8	period [prep] three years	44
9	time [prep] three years	30
10	[noun sg] after three years	26
11	[noun sg] after three years	26
12	[noun sg] within three years	21
13	[noun sg] within three years	21
14	[noun sg] to three years	10
15	[noun sg] to three years	10
16	sentence [prep] three years	8
17	end [prep] three years	8
18	age [prep] three years	7
19	year [prep] three years	7
20	minimum [prep] three years	6
21	term [prep] three years	6
22	degree [prep] three years	6
23	office [prep] three years	5
24	[noun sg] from three years	5
25	[noun sg] with three years	5
26	[noun sg] with three years	5
27	[noun sg] from three years	5