SN4 ""

No	Pattern	Freq
1	[conj] it is [adv] [conj]	256
2	[conj] it is [adv] [conj]	221
3	[coord] it is [adv] [conj]	114
4	[conj] it is [adv] [subord]	112
5	[subord] it is [adv] [conj]	92
6	[conj] it is [adv] that	77
7	[conj] it is [adv] [that]	77
8	[conj] it is [adv] that	77
9	and it is [adv] [conj]	71
10	and it is [adv] [conj]	71
11	[conj] it is [adv] [coord]	67
12	[that] it is [adv] [conj]	50
13	that it is [adv] [conj]	50
14	that it is [adv] [conj]	50
15	but it is [adv] [conj]	42
16	[conj] it is [adv] and	42
17	[conj] it is [adv] and	42
18	but it is [adv] [conj]	42
19	[conj] it is [adv] because	36
20	[conj] it is only [conj]	36
21	[conj] it is [adv] because	36
22	[conj] it is only [conj]	36
23	[conj] it is here [conj]	34
24	[conj] it is here [conj]	34
25	[conj] it is [not/n't] [conj]	29
26	[conj] it is not [conj]	29
27	if it is [adv] [conj]	22
28	if it is [adv] [conj]	22
29	[conj] it is [adv] as	18
30	[conj] it is [adv] when	18