SN4 ""

No	Pattern	Freq
1	[vb mod] have been [vb pp] [prep]	2823
2	[modal v] have been [vb pp] [prep]	2797
3	[modal v] have been [vb pp] by	803
4	would have been [vb pp] [prep]	642
5	would have been [vb pp] [prep]	626
6	may have been [vb pp] [prep]	550
7	may have been [vb pp] [prep]	550
8	could have been [vb pp] [prep]	509
9	could have been [vb pp] [prep]	509
10	[modal v] have been [vb pp] in	458
11	should have been [vb pp] [prep]	336
12	should have been [vb pp] [prep]	336
13	might have been [vb pp] [prep]	314
14	might have been [vb pp] [prep]	314
15	[modal v] have been [vb pp] to	295
16	must have been [vb pp] [prep]	238
17	must have been [vb pp] [prep]	238
18	[modal v] have been [vb pp] for	235
19	will have been [vb pp] [prep]	201
20	will have been [vb pp] [prep]	198
21	[modal v] have been [vb pp] with	158
22	[modal v] have been [vb pp] on	129
23	[modal v] have been [vb pp] from	129
24	[modal v] have been [vb pp] as	117
25	[modal v] have been [vb pp] at	117
26	[modal v] have been made [prep]	86
27	[modal v] have been used [prep]	76
28	[modal v] have been [vb pp] into	69
29	[modal v] have been [vb pp] of	55
30	[modal v] have been done [prep]	53