SN4 ""

No	Pattern	Freq
1	[pron] have [been] [prep] [det] years	15
2	[conj] have [been] [prep] [det] years	10
3	[pers pn] have [been] [prep] [det] years	10
4	[coord] have [been] [prep] [det] years	10
5	and have [been] [prep] [det] years	8
6	and have [been] [prep] [det] years	8
7	[noun] have [been] [prep] [det] years	6
8	have [been] [verb] [prep] [det] years	118
9	have [been] [vb pp] [prep] [det] years	82
10	have [been] [adj] [prep] [det] years	41
11	have [been] [adj] [prep] [det] years	41
12	have [been] [v-ing] [prep] [det] years	36
13	have [been] known [prep] [det] years	15
14	have [been] know [prep] [det] years	15
15	have [been] [adv] [prep] [det] years	13
16	have [been] use [prep] [det] years	12
17	have [been] used [prep] [det] years	12
18	have [been] around [prep] [det] years	9
19	have [been] around [prep] [det] years	9
20	have [been] [adv prt] [prep] [det] years	9
21	have [been] empty [prep] [det] years	6
22	have [been] empty [prep] [det] years	6
23	have [been] [noun] [prep] [det] years	5
24	have [been] establish [prep] [det] years	5
25	have [been] established [prep] [det] years	5
26	have [been] [prep] [det] years [art]	8
27	have [been] [prep] [det] years [art]	8
28	have [been] [prep] [det] years a	5