SN4 ""

No	Pattern	Freq
1	[noun] is [vb pp] to be	1979
2	[noun sg] is [vb pp] to [be]	1536
3	[noun] is said to [be]	278
4	[noun prp] is [vb pp] to [be]	246
5	[noun] is expected to [be]	232
6	[noun] is thought to [be]	168
7	[noun pl] is [vb pp] to [be]	149
8	[noun] is believed to [be]	131
9	[noun] is considered to [be]	87
10	[noun] is bound to [be]	78
11	[noun] is seen to [be]	73
12	[noun] is known to [be]	72
13	[noun] is assumed to [be]	67
14	[noun] is deemed to [be]	50
15	[noun] is intended to [be]	49
16	[noun] is taken to [be]	46
17	[noun] is understood to [be]	45
18	[noun] is meant to [be]	43
19	[noun] is designed to [be]	42
20	[noun] is held to [be]	36
21	[noun] is found to [be]	34
22	[noun] is shown to [be]	29
23	[noun] is set to [be]	28
24	[noun] is estimated to [be]	28
25	[noun] is reported to [be]	27
26	[letter] is [vb pp] to [be]	25
27	[noun] is required to [be]	24
28	[n mass] is [vb pp] to [be]	23
29	[noun] is claimed to [be]	23
30	system is [vb pp] to [be]	22