SN4 ""

No	Pattern	Freq
1	[vb pp] to have been [verb] [prep] the	151
2	[vb pp] to have been [vb pp] [prep] the	146
3	[vb pp] to have been [verb] by the	48
4	[vb pp] to have been [verb] in the	33
5	said to have been [verb] [prep] the	29
6	thought to have been [verb] [prep] the	21
7	reported to have been [verb] [prep] the	18
8	known to have been [verb] [prep] the	16
9	believed to have been [verb] [prep] the	15
10	[vb pp] to have been [verb] on the	11
11	[vb pp] to have been [verb] to the	9
12	deemed to have been [verb] [prep] the	8
13	[vb pp] to have been kill [prep] the	8
14	[vb pp] to have been killed [prep] the	8
15	[vb pp] to have been [verb] at the	7
16	[vb pp] to have been [verb] during the	7
17	[vb pp] to have been use [prep] the	7
18	[vb pp] to have been [verb] for the	7
19	[vb pp] to have been used [prep] the	7
20	[vb pp] to have been [verb] with the	6
21	[vb pp] to have been built [prep] the	6
22	[vb pp] to have been build [prep] the	6
23	[vb pp] to have been make [prep] the	6
24	alleged to have been [verb] [prep] the	6
25	[vb pp] to have been made [prep] the	6
26	[vb pp] to have been [v-ing] [prep] the	5
27	[vb pp] to have been [verb] from the	5