SN4 ""

No	Pattern	Freq
1	it [be] for [det] [noun]	235
2	it [be] for [det] [noun]	235
3	it be for [det] [noun]	235
4	it [be] for [det] [noun sg]	186
5	it [is] for [det] [noun]	175
6	it [be] for [det] reason	170
7	it is for [det] [noun]	153
8	it [be] for [det] reason	152
9	it [be] for this [noun]	150
10	it [was/were] for [det] [noun]	57
11	it was for [det] [noun]	57
12	it [be] for [det] [noun pl]	39
13	it [be] for that [noun]	24
14	it [be] for these [noun]	22
15	it 's for [det] [noun]	22
16	it [be] for [det] reasons	18
17	it [be] for [det] people	8
18	it [be] for [det] people	8
19	it [be] for [det] [n mass]	8
20	it [be] for many [noun]	6
21	it [be] for each [noun]	6
22	it [be] for such [noun]	6
23	it [be] for all [noun]	5