SN4 ""

No	Pattern	Freq
1	[vb mod] have been [vb pp]	5882
2	would have been [vb pp]	1369
3	could have been [vb pp]	1056
4	may have been [vb pp]	987
5	might have been [vb pp]	758
6	should have been [vb pp]	752
7	must have been [vb pp]	496
8	will have been [vb pp]	413
9	[vb mod] have been made	180
10	[vb mod] have been expected	160
11	[vb mod] have been used	151
12	[vb mod] have been done	113
13	[vb mod] have been given	93
14	[vb mod] have been taken	82
15	[vb mod] have been avoided	76
16	[vb mod] have been put	60
17	[vb mod] have been lost	57
18	[vb mod] have been caused	54
19	[vb mod] have been killed	53
20	[vb mod] have been brought	51
21	[vb mod] have been written	51
22	[vb mod] have been left	46
23	'd have been [vb pp]	44
24	[vb mod] to have been [vb pp]	42
25	ought have been [vb pp]	42
26	[vb mod] have been achieved	41
27	[vb mod] have been sent	40
28	[vb mod] have been seen	39
29	[vb mod] have been thought	37
30	[vb mod] have been saved	36