SN4 ""

No	Pattern	Freq
1	[verb] [conj] have been	5
2	[conj] [vb mod] have been	929
3	[conj] [modal v] have been	929
4	[conj] would have been	286
5	[conj] would have been	286
6	[conj] might have been	195
7	[conj] might have been	195
8	[conj] could have been	131
9	[conj] could have been	131
10	[conj] may have been	118
11	[conj] may have been	118
12	[conj] should have been	104
13	[conj] should have been	104
14	[conj] must have been	88
15	[conj] must have been	88
16	[conj] [adv] have been	57
17	[conj] well have been	57
18	[conj] well have been	57
19	[conj] [adv] have been	57