SN4 ""

No	Pattern	Freq
1	[conj] it is [adj] for	555
2	[conj] it is [adj] for	527
3	that it is [adj] for	220
4	[that] it is [adj] for	220
5	that it is [adj] for	220
6	[subord] it is [adj] for	183
7	[coord] it is [adj] for	152
8	and it is [adj] for	88
9	and it is [adj] for	88
10	but it is [adj] for	61
11	but it is [adj] for	61
12	[conj] it is possible for	60
13	[conj] it is possible for	60
14	[conj] it is difficult for	44
15	[conj] it is difficult for	44
16	[conj] it is important for	38
17	[conj] it is important for	38
18	if it is [adj] for	34
19	if it is [adj] for	34
20	[conj] it is necessary for	30
21	[conj] it is necessary for	30
22	[conj] it is good for	28
23	[conj] it is impossible for	27
24	[conj] it is impossible for	27
25	because it is [adj] for	25
26	because it is [adj] for	25
27	[conj] it is [adj -er] for	24
28	[conj] it is easy for	23
29	so it is [adj] for	22
30	so it is [adj] for	22