SN4 ""

No	Pattern	Freq
1	[subord] it have been for [noun]	11
2	[conj] it have been for [noun]	11
3	as it have been for [noun]	7
4	as it have been for [noun]	7
5	it have [not/n't] been for [noun]	42
6	it have not been for [noun]	42
7	it have [adv] been for [noun]	42
8	it have n't been for [noun]	27
9	it have not been for [noun]	15
10	it have been [verb] for [noun]	59
11	it have been [vb pp] for [noun]	51
12	it have been [adj] for [noun]	33
13	it have been [adj] for [noun]	33
14	it have been known for [noun]	10
15	it have been know for [noun]	10
16	it have been [v-ing] for [noun]	8
17	it have been use for [noun]	6
18	it have been used for [noun]	6
19	it have been [adv] for [noun]	5
20	it have been for [adj] [noun]	10
21	it have been for [art] [noun]	7
22	it have been for [art] [noun]	7
23	it have been for [num] [noun]	5
24	it have been for a [noun]	5
25	it have been for a [noun]	5