SN4 ""

No	Pattern	Freq
1	[conj] it is [adj] [to-vb] that	276
2	[coord] it is [adj] [verb] that	174
3	but it is [adj] [verb] that	88
4	but it is [adj] [verb] that	88
5	and it is [adj] [verb] that	86
6	and it is [adj] [verb] that	86
7	[subord] it is [adj] [verb] that	66
8	[conj] it is important [verb] that	49
9	[conj] it is [adj] say that	43
10	[conj] it is [adj] to say that	43
11	[that] it is [adj] [verb] that	38
12	that it is [adj] [verb] that	38
13	that it is [adj] [verb] that	38
14	[conj] it is [adj] believe that	24
15	[conj] it is [adj] to believe that	24
16	[conj] it is [adj] note that	23
17	[conj] it is [adj] to note that	23
18	[conj] it is [adj] assume that	22
19	[conj] it is [adj] to assume that	21
20	[conj] it is reasonable [verb] that	20
21	[conj] it is true [verb] that	19
22	[conj] it is difficult [verb] that	18
23	[conj] it is fair [verb] that	17
24	[conj] it is hard [verb] that	17
25	so it is [adj] [verb] that	16
26	[conj] it is easy [verb] that	16
27	so it is [adj] [verb] that	16
28	[conj] it is [adj] remember that	15
29	[conj] it is [adj] to remember that	15
30	while it is [adj] [verb] that	13