SN4 ""

No	Pattern	Freq
1	it [adj] [to-vb] [prep] the [noun]	102
2	it [adj] [to-vb] [prep] the [noun]	102
3	it [adj] [to-vb] [prep] the [noun sg]	73
4	it difficult [to-vb] [prep] the [noun]	33
5	it [adj] [to-vb] [prep] the [noun pl]	26
6	it [adj] [to-vb] with the [noun]	23
7	it [adj] [to-vb] to the [noun]	20
8	it hard [to-vb] [prep] the [noun]	14
9	it necessary [to-vb] [prep] the [noun]	10
10	it [adj] [to-vb] on the [noun]	8
11	it possible [to-vb] [prep] the [noun]	8
12	it [adj] [to-vb] in the [noun]	8
13	it [adj] to go [prep] the [noun]	8
14	it [adj] [to-vb] from the [noun]	7
15	it [adj] [to-vb] for the [noun]	6
16	it impossible [to-vb] [prep] the [noun]	6
17	it easy [to-vb] [prep] the [noun]	6
18	it [adj] to cope [prep] the [noun]	5
19	it [adj] to get [prep] the [noun]	5
20	it [adj] to live [prep] the [noun]	5
21	it [adj] [to-vb] through the [noun]	5
22	it [adj] to deal [prep] the [noun]	5
23	it [adj] [to-vb] of the [noun]	5