SN4 ""

No	Pattern	Freq
1	have been [verb] to be	621
2	have been [vb pp] to [be]	612
3	has been [verb] to [be]	279
4	have been [verb] to [be]	184
5	have been shown to [be]	176
6	have been show to [be]	176
7	have been find to [be]	143
8	have been found to [be]	143
9	had been [verb] to [be]	103
10	have been hold to [be]	28
11	have been held to [be]	28
12	have been [verb] to [be]	24
13	have been report to [be]	23
14	have been reported to [be]	23
15	have been prove to [be]	19
16	having been [verb] to [be]	17
17	have been design to [be]	16
18	have been designed to [be]	16
19	have been proved to [be]	14
20	have been considered to [be]	12
21	have been consider to [be]	12
22	have been expect to [be]	12
23	have been said to [be]	12
24	have been say to [be]	12
25	have been expected to [be]	11
26	have been assume to [be]	11
27	have been assumed to [be]	11
28	have been thought to [be]	10
29	have been think to [be]	10
30	have been known to [be]	9