SN4 ""

No	Pattern	Freq
1	[noun pl] that [vb base] been	997
2	[noun pl] that [vb base] [been]	997
3	[noun pl] that have [been]	988
4	things that [vb base] [been]	32
5	points that [vb base] [been]	23
6	changes that [vb base] [been]	17
7	problems that [vb base] [been]	13
8	issues that [vb base] [been]	12
9	studies that [vb base] [been]	11
10	arguments that [vb base] [been]	11
11	policies that [vb base] [been]	10
12	areas that [vb base] [been]	10
13	[noun pl] that 've [been]	9
14	techniques that [vb base] [been]	9
15	words that [vb base] [been]	8
16	comments that [vb base] [been]	8
17	proposals that [vb base] [been]	8
18	concerns that [vb base] [been]	7
19	factors that [vb base] [been]	7
20	animals that [vb base] [been]	7
21	attempts that [vb base] [been]	7
22	books that [vb base] [been]	7
23	cases that [vb base] [been]	7
24	figures that [vb base] [been]	7
25	ideas that [vb base] [been]	7
26	items that [vb base] [been]	7
27	criticisms that [vb base] [been]	7
28	companies that [vb base] [been]	7
29	features that [vb base] [been]	6
30	jobs that [vb base] [been]	6