SN4 ""

No	Pattern	Freq
31	may have been for	10
32	not have been for	10
33	there have been for	10
34	there have been for	10
35	may have been for	10
36	[not/n't] have been for	10
37	might have been for	7
38	might have been for	7
39	n't have been for	7
40	[Wh pn] have been for	6
41	who have been for	6
42	[det] have been for	6
43	who have been for	6
44	we have been for	5
45	plan have been for	5
46	plan have been for	5
47	we 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