SN4 ""

No	Pattern	Freq
1	[verb] to have been [noun pl]	25
2	[vb base] to have been [noun pl]	15
3	seem to have been [noun pl]	11
4	seem to have been [noun pl]	7
5	appear to have been [noun pl]	7
6	appear to have been [noun pl]	7
7	[vb pp] to have been [noun pl]	5
8	to have been [adj] [noun pl]	33
9	to have been [adj] [noun pl]	19
10	to have been [art] [noun pl]	14
11	to have been the [noun pl]	14
12	to have been the [noun pl]	14
13	to have been [art] [noun pl]	14
14	to have been [num] [noun pl]	9
15	to have been [prep] [noun pl]	7
16	to have been [prep] [noun pl]	7
17	to have been [verb] [noun pl]	7
18	to have been [v-ing] [noun pl]	5
19	to have been [noun pl] [prep]	18
20	to have been [noun pl] [prep]	18
21	to have been [noun pl] of	8
22	to have been [noun pl] of	8
23	to have been [noun pl] in	5
24	to have been [noun pl] in	5