SN4 ""

No	Pattern	Freq
1	[vb mod] have done	1876
2	[modal v] have done	1800
3	would have done	657
4	would have done	564
5	could have done	465
6	could have done	465
7	should have done	257
8	should have done	257
9	might have done	182
10	might have done	182
11	must have done	149
12	must have done	149
13	'd have done	93
14	may have done	66
15	may have done	66
16	will have done	55
17	[modal v] 've done	50
18	will have done	45
19	ought have done	26
20	ought have done	26
21	[modal v] to have done	26
22	'll have done	10
23	can have done	8
24	can have done	8
25	need have done	8
26	need have done	8