SN4 ""

No	Pattern	Freq
1	[vb mod] have been [verb] in	519
2	[modal v] have been [verb] in	519
3	[modal v] have been [verb] in	515
4	[modal v] have been [vb pp] in	458
5	would have been [verb] in	123
6	would have been [verb] in	122
7	may have been [verb] in	90
8	may have been [verb] in	90
9	could have been [verb] in	87
10	could have been [verb] in	87
11	should have been [verb] in	75
12	should have been [verb] in	75
13	[modal v] have been [v-ing] in	59
14	must have been [verb] in	54
15	must have been [verb] in	54
16	might have been [verb] in	51
17	might have been [verb] in	51
18	will have been [verb] in	35
19	will have been [verb] in	34
20	[modal v] have been use in	18
21	[modal v] have been used in	18
22	[modal v] have been do in	16
23	[modal v] have been done in	14
24	[modal v] have been included in	13
25	[modal v] have been include in	13
26	[modal v] have been bear in	11
27	[modal v] have been made in	10
28	[modal v] have been make in	10
29	[modal v] have been born in	10
30	[modal v] have been write in	7