SN4 ""

No	Pattern	Freq
1	[vb mod] have been [prep] the	312
2	[modal v] have been [prep] the	312
3	would have been [prep] the	101
4	would have been [prep] the	92
5	[adv] have been [prep] the	75
6	must have been [prep] the	60
7	must have been [prep] the	60
8	may have been [prep] the	49
9	may have been [prep] the	49
10	should have been [prep] the	39
11	[adv] have been [prep] the	39
12	should have been [prep] the	39
13	[not/n't] have been [prep] the	36
14	not have been [prep] the	36
15	might have been [prep] the	33
16	might have been [prep] the	33
17	could have been [prep] the	21
18	not have been [prep] the	21
19	could have been [prep] the	21
20	n't have been [prep] the	15
21	'd have been [prep] the	9
22	will have been [prep] the	9
23	well have been [prep] the	8
24	will have been [prep] the	8
25	well have been [prep] the	8
26	never have been [prep] the	6
27	never have been [prep] the	6
28	have been [verb] [prep] the	1122
29	have been [vb pp] [prep] the	1025
30	have been [adj] [prep] the	478