SN4 ""

No	Pattern	Freq
1	[modal v] have been [det]	361
2	[vb mod] have [been] [det]	361
3	[modal v] have [been] some	103
4	would have [been] [det]	97
5	must have [been] [det]	92
6	must have [been] [det]	92
7	would have [been] [det]	91
8	could have [been] [det]	62
9	could have [been] [det]	62
10	may have [been] [det]	49
11	may have [been] [det]	49
12	might have [been] [det]	35
13	might have [been] [det]	35
14	[modal v] have [been] little	30
15	[modal v] have [been] that	30
16	[modal v] have [been] enough	28
17	[modal v] have [been] any	27
18	[modal v] have [been] many	25
19	[modal v] have [been] another	18
20	[modal v] have [been] this	16
21	[modal v] have [been] more	14
22	should have [been] [det]	13
23	[modal v] have [been] much	13
24	should have [been] [det]	13
25	[modal v] have [been] such	11
26	[modal v] have [been] those	10
27	[modal v] have [been] all	10
28	[modal v] have [been] few	8
29	[modal v] have [been] several	8
30	can have [been] [det]	8