SN4 ""

No	Pattern	Freq
1	have [adv] been [adv] [adj] for	21
2	have [adv] been [adv] [adj] for	13
3	have not been [adv] [adj] for	8
4	have [not/n't] been [adv] [adj] for	8
5	have not been [adv] [adj] for	7
6	[pron] have been [adv] [adj] for	99
7	[pers pn] have been [adv] [adj] for	79
8	[modal v] have been [adv] [adj] for	79
9	[vb mod] have been [adv] [adj] for	79
10	[noun] have been [adv] [adj] for	68
11	would have been [adv] [adj] for	38
12	it have been [adv] [adj] for	38
13	would have been [adv] [adj] for	38
14	it have been [adv] [adj] for	38
15	[noun sg] have been [adv] [adj] for	36
16	must have been [adv] [adj] for	22
17	must have been [adv] [adj] for	22
18	[noun pl] have been [adv] [adj] for	19
19	[adv] have been [adv] [adj] for	18
20	i have been [adv] [adj] for	13
21	[adj] have been [adv] [adj] for	13
22	i have been [adv] [adj] for	13
23	[noun prp] have been [adv] [adj] for	13
24	he have been [adv] [adj] for	11
25	[not/n't] have been [adv] [adj] for	10
26	[Wh det] have been [adv] [adj] for	10
27	not have been [adv] [adj] for	10
28	he have been [adv] [adj] for	10
29	[Wh pn] have been [adv] [adj] for	9
30	[verb] have been [adv] [adj] for	9