SN4 ""

No	Pattern	Freq
1	[noun] is a [noun] for	583
2	[noun] is a [noun sg] for	581
3	[noun] is a [noun] for	529
4	[noun sg] is a [noun] for	457
5	[noun] is a matter for	87
6	[noun] is a matter for	87
7	[noun pl] is a [noun] for	62
8	[noun] is an [noun] for	54
9	[noun prp] is a [noun] for	54
10	[noun] is a must for	27
11	[noun] is a must for	27
12	[noun] is a prerequisite for	22
13	[noun] is a prerequisite for	22
14	[noun] is a substitute for	15
15	[noun] is a substitute for	15
16	[noun] is a time for	12
17	[noun] is a time for	12
18	[noun] is a cause for	11
19	[noun] is a cause for	11
20	[noun] is a problem for	9
21	[noun] is a problem for	9
22	[noun] is a recipe for	8
23	book is a [noun] for	8
24	[noun] is a recipe for	8
25	[n mass] is a [noun] for	8
26	[noun] is a opportunity for	8
27	[noun] is a opportunity for	8
28	book is a [noun] for	8
29	[noun] is a vote for	7
30	[noun] is a vote for	7