SN4 ""

No	Pattern	Freq
1	it be [det] [noun] [prep]	947
2	it be [det] [noun] [prep]	946
3	it be [det] [noun] of	651
4	it be [det] [noun] of	651
5	it be [det] [noun] [conj]	540
6	it be [det] [noun] [pron]	362
7	it be [det] [noun] [that]	270
8	it be [det] [noun] that	270
9	it be [det] [noun] that	270
10	it be [det] [noun] [Wh det]	248
11	it be [det] [noun] which	245
12	it be [det] [noun] which	245
13	it be [det] [noun] [noun]	164
14	it be [det] [noun] [subord]	154
15	it be [det] [noun] [noun sg]	116
16	it be [det] [noun] [coord]	116
17	it be [det] [noun] [adv]	114
18	it be [det] [noun] [verb]	111
19	it be [det] [noun] and	100
20	it be [det] [noun] and	100
21	it be [det] [noun] [adv]	90
22	it be [det] [noun] before	88
23	it be [det] [noun] before	88
24	it be [det] [noun] [pers pn]	72
25	it be [det] [noun] to	56
26	it be [det] [noun] to	56
27	it be [det] [noun] in	49
28	it be [det] [noun] in	49
29	it be [det] [noun] [Wh pn]	40
30	it be [det] [noun] who	40