SN4 ""

No	Pattern	Freq
1	[pron] have [adv] been an	155
2	[pers pn] have [adv] been an	71
3	there have [adv] been an	64
4	[ex0] have [adv] been an	64
5	there have [adv] been an	64
6	[noun] have [adv] been an	59
7	it have [adv] been an	38
8	it have [adv] been an	38
9	[noun sg] have [adv] been an	34
10	[adj] have [adv] been an	17
11	[det] have [adv] been an	14
12	[Wh det] have [adv] been an	14
13	[noun prp] have [adv] been an	13
14	i have [adv] been an	11
15	he have [adv] been an	11
16	he have [adv] been an	11
17	[noun pl] have [adv] been an	11
18	i have [adv] been an	11
19	what have [adv] been an	10
20	what have [adv] been an	10
21	this have [adv] been an	9
22	this have [adv] been an	9
23	she have [adv] been an	9
24	she have [adv] been an	9
25	have [adv] [adv] been an	12
26	have [adv] [adv] been an	6
27	have [not/n't] [adv] been an	6
28	have not [adv] been an	6
29	have not [adv] been an	5
30	have [adv] [adv] been an	12