SN4 ""

No	Pattern	Freq
1	have [adv] been [verb] for	6
2	have [adv] been [verb] for	6
3	[vb mod] have been [verb] for	286
4	[modal v] have been [verb] for	286
5	would have been [verb] for	73
6	would have been [verb] for	70
7	could have been [verb] for	67
8	could have been [verb] for	67
9	[adv] have been [verb] for	61
10	[adv] have been [verb] for	46
11	might have been [verb] for	37
12	might have been [verb] for	37
13	must have been [verb] for	36
14	must have been [verb] for	36
15	may have been [verb] for	30
16	may have been [verb] for	30
17	should have been [verb] for	26
18	should have been [verb] for	26
19	will have been [verb] for	17
20	will have been [verb] for	16
21	[not/n't] have been [verb] for	15
22	not have been [verb] for	15
23	not have been [verb] for	11
24	well have been [verb] for	6
25	well have been [verb] for	6
26	also have been [verb] for	5
27	also have been [verb] for	5
28	have been [adv] [verb] for	12
29	have been [adv] [verb] for	12
30	have been [adj] [verb] for	11