SN4 ""

No	Pattern	Freq
1	it is [verb] the [noun]	372
2	it is [verb] the [noun sg]	287
3	it is [vb pp] the [noun]	155
4	it is [to-vb] the [noun]	120
5	it is [v-ing] the [noun]	95
6	it is [verb] the [noun pl]	60
7	it is understand the [noun]	27
8	it is hoped the [noun]	25
9	it is believe the [noun]	25
10	it is hope the [noun]	25
11	it is believed the [noun]	25
12	it is understood the [noun]	25
13	it is [verb] the [noun prp]	24
14	it is call the [noun]	24
15	it is called the [noun]	24
16	it is think the [noun]	9
17	it is thought the [noun]	9
18	it is say the [noun]	8
19	it is said the [noun]	7
20	it is give the [noun]	7
21	it is [verb] the company	6
22	it is make the [noun]	6
23	it is [verb] the company	6
24	it is [verb] the way	5
25	it is take the [noun]	5
26	it is fear the [noun]	5
27	it is know the [noun]	5
28	it is to keep the [noun]	5
29	it is [verb] the way	5
30	it is [verb] the number	5