SN4 ""

No	Pattern	Freq
1	[adj] [noun sg] is required	652
2	[adj] [noun] is required	474
3	[det] [noun] is required	126
4	[adj -er] [noun] is required	79
5	further [noun] is required	61
6	far [noun] is required	61
7	[adj] [noun pl] is required	44
8	[adj] action is required	40
9	[adj] action is required	40
10	more [noun] is required	31
11	more [noun] is required	31
12	this [noun] is required	20
13	this [noun] is required	20
14	[num] [noun] is required	19
15	[adj] work is required	18
16	[adj] work is required	18
17	[adj] information is required	17
18	[adj] information is required	17
19	each [noun] is required	14
20	each [noun] is required	14
21	special [noun] is required	13
22	special [noun] is required	13
23	[adj] effort is required	13
24	[adj] effort is required	13
25	additional [noun] is required	12
26	some [noun] is required	12
27	additional [noun] is required	12
28	some [noun] is required	12
29	that [noun] is required	10
30	such [noun] is required	10