SN4 ""

No	Pattern	Freq
1	[conj] it have been [adv]	391
2	[subord] it have been [adv]	213
3	[coord] it have been [adv]	123
4	[adv] it have been [adv]	77
5	[noun] it have been [adv]	70
6	and it have been [adv]	69
7	and it have been [adv]	69
8	if it have been [adv]	59
9	if it have been [adv]	59
10	[that] it have been [adv]	55
11	that it have been [adv]	55
12	that it have been [adv]	55
13	[verb] it have been [adv]	54
14	[adv] it have been [adv]	54
15	but it have been [adv]	52
16	but it have been [adv]	52
17	[noun sg] it have been [adv]	48
18	because it have been [adv]	32
19	because it have been [adv]	32
20	[adj] it have been [adv]	26
21	as it have been [adv]	23
22	as it have been [adv]	23
23	[pron] it have been [adv]	22
24	than it have been [adv]	21
25	[vb base] it have been [adv]	21
26	than it have been [adv]	21
27	[Wh adv] it have been [adv]	19
28	[noun pl] it have been [adv]	18
29	[prep] it have been [adv]	16
30	[prep] it have been [adv]	16