SN4 ""

No	Pattern	Freq
1	it is [verb] that the [noun sg]	644
2	it is [vb pp] that the [noun sg]	628
3	it be estimated that the [noun sg]	46
4	it [be] estimated that the [noun sg]	46
5	it is estimated that [art] [noun sg]	32
6	it [is] estimated that the [noun sg]	29
7	it is estimated that the [noun]	29
8	[pers pn] is estimated that the [noun sg]	27
9	[pron] is estimated that the [noun sg]	27
10	it is estimated [conj] the [noun sg]	27
11	it is estimated that the [noun sg]	27
12	it is estimate that the [noun sg]	27