SN4 ""

No	Pattern	Freq
1	[verb] it be the [noun sg]	517
2	[verb] it [is] the [noun sg]	268
3	[verb] it [was/were] the [noun sg]	239
4	[verb] it was the [noun sg]	237
5	[vb base] it [be] the [noun sg]	217
6	[verb] it 's the [noun sg]	196
7	think it [be] the [noun sg]	177
8	[vb past] it [be] the [noun sg]	127
9	think it [be] the [noun sg]	95
10	say it [be] the [noun sg]	93
11	[verb] it is the [noun sg]	72
12	[vb infin] it [be] the [noun sg]	55
13	[vb -s] it [be] the [noun sg]	50
14	thought it [be] the [noun sg]	41
15	[v-ing] it [be] the [noun sg]	33
16	said it [be] the [noun sg]	28
17	know it [be] the [noun sg]	28
18	think it [be] the [noun sg]	27
19	suppose it [be] the [noun sg]	27
20	says it [be] the [noun sg]	24
21	suppose it [be] the [noun sg]	24
22	[vb pp] it [be] the [noun sg]	21
23	say it [be] the [noun sg]	20
24	[verb] it [be] the sort	20
25	[verb] it [be] the end	17
26	believe it [be] the [noun sg]	17
27	[verb] it [be] the way	15
28	[to-vb] it [be] the [noun sg]	14
29	mean it [be] the [noun sg]	13
30	[verb] it [be] the beginning	12