SN4 ""

No	Pattern	Freq
1	[noun] have [been] [verb] for years	43
2	[pron] have [been] [verb] for years	41
3	[pers pn] have [been] [verb] for years	30
4	[noun sg] have [been] [verb] for years	18
5	[noun pl] have [been] [verb] for years	15
6	we have [been] [verb] for years	7
7	we have [been] [verb] for years	7
8	they have [been] [verb] for years	7
9	[noun prp] have [been] [verb] for years	7
10	they have [been] [verb] for years	7
11	that have [been] [verb] for years	6
12	[that] have [been] [verb] for years	6
13	[Wh pn] have [been] [verb] for years	6
14	who have [been] [verb] for years	6
15	[conj] have [been] [verb] for years	6
16	who have [been] [verb] for years	6
17	that have [been] [verb] for years	6
18	i have [been] [verb] for years	5
19	i have [been] [verb] for years	5
20	have [adv] [been] [verb] for years	12
21	have not [been] [verb] for years	9
22	have [not/n't] [been] [verb] for years	9
23	have not [been] [verb] for years	5
24	have [been] [adv] [verb] for years	5
25	have [been] [adv] [verb] for years	5
26	have [been] [verb] [adv] for years	43
27	have [been] [verb] [pers pn] for years	29
28	have [been] [verb] [pron] for years	29
29	have [been] [verb] [adv prt] for years	22
30	have [been] [verb] [adv] for years	21