SN4 ""

No	Pattern	Freq
1	reason for the [noun sg] of	253
2	reason for the [noun] of	165
3	reasons for the [noun] of	96
4	reason for the failure of	15
5	reason for the failure of	14
6	reason for the lack of	11
7	reason for the existence of	11
8	reason for the existence of	11
9	reason for the lack of	11
10	reason for the popularity of	9
11	reason for the popularity of	9
12	reason for the [noun pl] of	8
13	reason for the choice of	8
14	reason for the choice of	8
15	reason for the development of	7
16	reason for the development of	7
17	reason for the introduction of	6
18	reason for the decline of	6
19	reason for the use of	6
20	reason for the use of	6
21	reason for the introduction of	6
22	reason for the enforcement of	5
23	reason for the decline of	5
24	reason for the enforcement of	5