SN4 ""

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