SN4 ""

No	Pattern	Freq
1	it have [adv] [adv] been [verb]	103
2	it have [not/n't] [adv] been [verb]	57
3	it have not [adv] been [verb]	57
4	it have not [adv] been [verb]	48
5	it have [adv] [adv] been [verb]	46
6	it have only [adv] been [verb]	15
7	it have only [adv] been [verb]	15
8	it have n't [adv] been [verb]	9
9	it have never [adv] been [verb]	5
10	it have so [adv] been [verb]	5
11	it have never [adv] been [verb]	5
12	it have so [adv] been [verb]	5
13	[conj] it have [adv] been [verb]	245
14	[subord] it have [adv] been [verb]	116
15	[coord] it have [adv] been [verb]	87
16	[noun] it have [adv] been [verb]	47
17	but it have [adv] been [verb]	45
18	but it have [adv] been [verb]	45
19	[that] it have [adv] been [verb]	42
20	that it have [adv] been [verb]	42
21	that it have [adv] been [verb]	42
22	and it have [adv] been [verb]	41
23	and it have [adv] been [verb]	41
24	[noun sg] it have [adv] been [verb]	30
25	[adv] it have [adv] been [verb]	30
26	[adv] it have [adv] been [verb]	23
27	if it have [adv] been [verb]	21
28	if it have [adv] been [verb]	21
29	although it have [adv] been [verb]	17
30	although it have [adv] been [verb]	17