SN4 ""

No	Pattern	Freq
1	[noun] as it have been	74
2	[noun sg] as it have been	67
3	[adj] as it have been	64
4	[adv] as it have been	58
5	[adv] as it have been	53
6	[adj] as it have been	52
7	[verb] as it have been	19
8	soon as it have been	14
9	soon as it have been	14
10	[vb pp] as it have been	13
11	just as it have been	11
12	just as it have been	11
13	[det] as it have been	10
14	same as it have been	7
15	same as it have been	7
16	[pron] as it have been	6
17	[conj] as it have been	6
18	[coord] as it have been	5
19	[noun pl] as it have been	5
20	exactly as it have been	5
21	exactly as it have been	5
22	be as it have been	5
23	[be] as it have been	5
24	as [subord] it have been	66
25	as [conj] it have been	66
26	as though it have been	47
27	as though it have been	47
28	as if it have been	18
29	as if it have been	18
30	as it [vb mod] have been	99