SN4 ""

No	Pattern	Freq
1	[vb past] to have been [vb pp] [prep]	189
2	[vb past] to have been [verb] by	75
3	seemed to have been [verb] [prep]	47
4	said to have been [verb] [prep]	42
5	appeared to have been [verb] [prep]	38
6	[vb past] to have been [verb] in	26
7	believed to have been [verb] [prep]	23
8	[vb past] to have been [verb] from	19
9	[vb past] to have been make [prep]	15
10	[vb past] to have been made [prep]	15
11	[vb past] to have been [verb] to	15
12	alleged to have been [verb] [prep]	11
13	[vb past] to have been [verb] with	11
14	[vb past] to have been [v-ing] [prep]	10
15	[vb past] to have been [verb] for	10
16	claimed to have been [verb] [prep]	9
17	[vb past] to have been [verb] at	9
18	[vb past] to have been committed [prep]	7
19	[vb past] to have been born [prep]	7
20	[vb past] to have been commit [prep]	7
21	[vb past] to have been cause [prep]	7
22	[vb past] to have been caused [prep]	7
23	[vb past] to have been bear [prep]	7
24	[vb past] to have been taken [prep]	5
25	[vb past] to have been use [prep]	5
26	[vb past] to have been take [prep]	5
27	[vb past] to have been [verb] on	5
28	[vb past] to have been used [prep]	5
29	looked to have been [verb] [prep]	5
30	[vb past] to have been start [prep]	5