SN4 ""

No	Pattern	Freq
1	[conj] it [is] the [noun]	1342
2	[coord] it [is] the [noun]	531
3	[subord] it [is] the [noun]	450
4	[adv] it [is] the [noun]	394
5	[adv] it [is] the [noun]	371
6	that it [is] the [noun]	361
7	that it [is] the [noun]	361
8	[that] it [is] the [noun]	361
9	[verb] it [is] the [noun]	326
10	and it [is] the [noun]	284
11	and it [is] the [noun]	284
12	[noun] it [is] the [noun]	271
13	but it [is] the [noun]	243
14	but it [is] the [noun]	243
15	[vb base] it [is] the [noun]	189
16	[noun sg] it [is] the [noun]	188
17	if it [is] the [noun]	114
18	if it [is] the [noun]	114
19	because it [is] the [noun]	109
20	because it [is] the [noun]	109
21	think it [is] the [noun]	100
22	think it [is] the [noun]	78
23	[pron] it [is] the [noun]	66
24	[prep] it [is] the [noun]	63
25	[prep] it [is] the [noun]	63
26	say it [is] the [noun]	61
27	[adj] it [is] the [noun]	54
28	whether it [is] the [noun]	53
29	whether it [is] the [noun]	53
30	[noun pl] it [is] the [noun]	52