SN4 ""

No	Pattern	Freq
1	[noun] which have been [adv] [prep]	6
2	which have been [verb] [adv] [prep]	139
3	which have been [vb pp] [adv] [prep]	122
4	which have been [v-ing] [adv] [prep]	17
5	which have been put [adv] [prep]	9
6	which have been put [adv] [prep]	9
7	which have been [adj] [adv] [prep]	6
8	which have been [adj] [adv] [prep]	6
9	which have been bring [adv] [prep]	5
10	which have been brought [adv] [prep]	5
11	which have been build [adv] [prep]	5
12	which have been [adv] [verb] [prep]	230
13	which have been [adv] [vb pp] [prep]	220
14	which have been [adv] [adj] [prep]	77
15	which have been [adv] [adj] [prep]	74
16	which have been [adv] [v-ing] [prep]	10
17	which have been [adv] important [prep]	9
18	which have been [adv] important [prep]	9
19	which have been [adv] developed [prep]	7
20	which have been [adv] develop [prep]	7
21	which have been [adv] influential [prep]	6
22	which have been [adv] influential [prep]	6
23	which have been [adv] successful [prep]	6
24	which have been [adv] successful [prep]	6
25	which have been [adv] used [prep]	5
26	which have been [adv] use [prep]	5
27	which have been [adv] [prep] [adj]	5
28	which have been [adv] [prep] [art]	5
29	which have been [adv] [prep] [art]	5