SN4 ""

No	Pattern	Freq
1	have [been] [verb] for years [prep]	25
2	have [been] [verb] for years [prep]	25
3	have [been] [verb] for years [verb]	15
4	have [been] [verb] for years [to-vb]	14
5	have [been] [verb] for years [conj]	13
6	have [been] [verb] for years [coord]	10
7	have [been] [verb] for years and	7
8	have [been] [verb] for years and	7
9	have [been] [verb] for years in	6
10	have [been] [verb] for years in	6
11	have [been] [verb] for years by	5
12	have [been] [verb] for years [adv]	5
13	have [been] [verb] for years by	5
14	[noun] have [been] [verb] for years	43
15	[pron] have [been] [verb] for years	41
16	[pers pn] have [been] [verb] for years	30
17	[noun sg] have [been] [verb] for years	18
18	[noun pl] have [been] [verb] for years	15
19	[noun prp] have [been] [verb] for years	7
20	we have [been] [verb] for years	7
21	they have [been] [verb] for years	7
22	they have [been] [verb] for years	7
23	we have [been] [verb] for years	7
24	that have [been] [verb] for years	6
25	[conj] have [been] [verb] for years	6
26	[Wh pn] have [been] [verb] for years	6
27	that have [been] [verb] for years	6
28	who have [been] [verb] for years	6
29	who have [been] [verb] for years	6
30	[that] have [been] [verb] for years	6