SN4 ""

No	Pattern	Freq
1	it is [prep] [adj] [noun sg] that	452
2	it is [prep] [det] [noun sg] that	396
3	it is [prep] this [noun sg] that	350
4	it is [prep] this [noun sg] that	350
5	it is in [adj] [noun sg] that	127
6	it is in [adj] [noun sg] that	127
7	it is for [adj] [noun sg] that	90
8	it is for [adj] [noun sg] that	90
9	it is [prep] [adj] reason that	89
10	it is at [adj] [noun sg] that	72
11	it is at [adj] [noun sg] that	72
12	it is [prep] [adj] [noun sg] that	55
13	it is [prep] [adj] point that	48
14	it is with [adj] [noun sg] that	32
15	it is [prep] [adj] context that	32
16	it is with [adj] [noun sg] that	32
17	it is [prep] [adj] sense that	30
18	it is [prep] that [noun sg] that	30
19	it is [prep] that [noun sg] that	30
20	it is of [adj] [noun sg] that	27
21	it is of [adj] [noun sg] that	27
22	it is [prep] [adj] importance that	22
23	it is against [adj] [noun sg] that	21
24	it is against [adj] [noun sg] that	21
25	it is from [adj] [noun sg] that	20
26	it is on [adj] [noun sg] that	20
27	it is on [adj] [noun sg] that	20
28	it is from [adj] [noun sg] that	20
29	it is [prep] [adj] stage that	18
30	it is [prep] [adj] background that	18