SN4 ""

No	Pattern	Freq
1	[noun sg] [prep] three years	444
2	[noun] for three years	267
3	[noun] of three years	129
4	[noun pl] [prep] three years	88
5	[noun] in three years	86
6	[noun prp] [prep] three years	58
7	period [prep] three years	47
8	period [prep] three years	44
9	[noun] after three years	38
10	[noun] within three years	34
11	time [prep] three years	32
12	time [prep] three years	30
13	[noun] to three years	20
14	[n mass] [prep] three years	13
15	month [prep] three years	10
16	sentence [prep] three years	10
17	end [prep] three years	8
18	end [prep] three years	8
19	sentence [prep] three years	8
20	age [prep] three years	7
21	age [prep] three years	7
22	year [prep] three years	7
23	term [prep] three years	7
24	year [prep] three years	7
25	[noun] with three years	7
26	minimum [prep] three years	6
27	minimum [prep] three years	6
28	term [prep] three years	6
29	degree [prep] three years	6
30	months [prep] three years	6