SN4 ""

No	Pattern	Freq
31	there have [been] for	10
32	may have [been] for	10
33	[ex0] have [been] for	10
34	may have [been] for	10
35	there have [been] for	10
36	[adj] have [been] for	10
37	might have [been] for	7
38	n't have [been] for	7
39	might have [been] for	7
40	[det] have [been] for	6
41	who have [been] for	6
42	[Wh pn] have [been] for	6
43	who have [been] for	6
44	plan have [been] for	5
45	we have [been] for	5
46	we have [been] for	5
47	plan have [been] for	5
48	have [adv] [been] for	249
49	have [not/n't] [been] for	217
50	have not [been] for	217
51	have n't [been] for	147
52	have not [been] for	70
53	have [adv] [been] for	32
54	have always [been] for	10
55	have always [been] for	10
56	have [pron] [been] for	9
57	have [pers pn] [been] for	8
58	have all [been] for	5
59	have all [been] for	5
60	have [been] [verb] for	5399