SN4 ""

No	Pattern	Freq
1	[vb mod] have been [adv] [adj] for	79
2	[modal v] have been [adv] [adj] for	79
3	would have been [adv] [adj] for	38
4	would have been [adv] [adj] for	38
5	must have been [adv] [adj] for	22
6	must have been [adv] [adj] for	22
7	[adv] have been [adv] [adj] for	16
8	not have been [adv] [adj] for	10
9	[not/n't] have been [adv] [adj] for	10
10	may have been [adv] [adj] for	7
11	may have been [adv] [adj] for	7
12	[adv] have been [adv] [adj] for	6
13	n't have been [adv] [adj] for	6
14	have been [adv] [adj] for [pron]	39
15	have been [adv] [adj] for [pers pn]	30
16	have been [adv] [adj] for [art]	24
17	have been [adv] [adj] for [art]	24
18	have been [adv] [adj] for [noun]	22
19	have been [adv] [adj] for the	19
20	have been [adv] [adj] for the	19
21	have been [adv] [adj] for [noun prp]	15
22	have been [adv] [adj] for me	10
23	have been [adv] [adj] for i	10
24	have been [adv] [adj] for [adj]	8
25	have been [adv] [adj] for [det]	6
26	have been [adv] [adj] for him	6
27	have been [adv] [adj] for he	6
28	have been [adv] [adj] for a	5
29	have been [adv] [adj] for a	5