SN4 ""

No	Pattern	Freq
1	[noun] that have been [vb pp]	860
2	[noun pl] that have been [vb pp]	790
3	[noun sg] that have been [vb pp]	53
4	[verb] that have been [vb pp]	36
5	[vb -s] that have been [vb pp]	27
6	[adj] that have been [vb pp]	26
7	[det] that have been [vb pp]	22
8	points that have been [vb pp]	22
9	point that have been [vb pp]	22
10	things that have been [vb pp]	18
11	thing that have been [vb pp]	18
12	those that have been [vb pp]	17
13	those that have been [vb pp]	17
14	[n mass] that have been [vb pp]	13
15	changes that have been [vb pp]	12
16	problem that have been [vb pp]	12
17	change that have been [vb pp]	12
18	study that have been [vb pp]	11
19	argument that have been [vb pp]	11
20	arguments that have been [vb pp]	11
21	studies that have been [vb pp]	11
22	problems that have been [vb pp]	11
23	policies that have been [vb pp]	10
24	policy that have been [vb pp]	10
25	techniques that have been [vb pp]	9
26	technique that have been [vb pp]	9
27	issue that have been [vb pp]	8
28	issues that have been [vb pp]	8
29	comment that have been [vb pp]	7
30	book that have been [vb pp]	7