SN4 ""

No	Pattern	Freq
1	[noun] of [noun] required	519
2	[noun sg] of [noun] required	439
3	[noun] of [noun sg] required	348
4	[noun] of [noun pl] required	156
5	number of [noun] required	81
6	number of [noun] required	78
7	[noun pl] of [noun] required	78
8	amount of [noun] required	62
9	amount of [noun] required	59
10	level of [noun] required	52
11	level of [noun] required	48
12	type of [noun] required	41
13	type of [noun] required	31
14	degree of [noun] required	27
15	degree of [noun] required	27
16	[noun] of information required	23
17	[noun] of information required	23
18	range of [noun] required	15
19	[noun] of [n mass] required	15
20	range of [noun] required	15
21	standard of [noun] required	14
22	[noun] of skill required	14
23	kind of [noun] required	13
24	[noun] of work required	12
25	standard of [noun] required	12
26	[noun] of work required	12
27	types of [noun] required	10
28	kind of [noun] required	10
29	[noun] of time required	9
30	[noun] of action required	9