SN4 ""

No	Pattern	Freq
1	it is [adv] [adj] [verb] and	41
2	it is [adv] [adj] [verb] and	37
3	it is [adv] [adv] [verb] and	23
4	it is [adv] [adv] [verb] and	22
5	it is [adv] easy [verb] and	5
6	it is [adv] [be] [verb] and	5
7	it is [adv] being [verb] and	5
8	it is [adv] easy [verb] and	5
9	it is [adv] difficult [verb] and	5
10	it is [adv] be [verb] and	5
11	it is [adv] difficult [verb] and	5
12	it is [adv] [being] [verb] and	5
13	[conj] it is [adv] [verb] and	38
14	[subord] it is [adv] [verb] and	20
15	[that] it is [adv] [verb] and	11
16	that it is [adv] [verb] and	11
17	that it is [adv] [verb] and	11
18	[coord] it is [adv] [verb] and	7
19	as it is [adv] [verb] and	7
20	as it is [adv] [verb] and	7
21	[adv] it is [adv] [verb] and	5
22	but it is [adv] [verb] and	5
23	but it is [adv] [verb] and	5
24	[verb] it is [adv] [verb] and	5
25	[noun] it is [adv] [verb] and	5
26	it is [adv] [adv] [verb] and	22
27	it is [adv] [adv] [verb] and	22
28	it is [art] [adv] [verb] and	10
29	it is [art] [adv] [verb] and	10
30	it is a [adv] [verb] and	6