SN4 ""

No	Pattern	Freq
1	have been [verb] for years	107
2	[verb] been [verb] for years	107
3	[vb base] been [verb] for years	46
4	have been [verb] for years	35
5	[vb past] been [verb] for years	30
6	had been [verb] for years	28
7	[vb -s] been [verb] for years	24
8	has been [verb] for years	15
9	[adv] been [verb] for years	12
10	've been [verb] for years	11
11	[not/n't] been [verb] for years	9
12	's been [verb] for years	9
13	not been [verb] for years	9
14	not been [verb] for years	5
15	[vb infin] been [verb] for years	5
16	been [adv] [verb] for years	6
17	been [adv] [verb] for years	6
18	been [verb] [adv] for years	46
19	been [verb] [pers pn] for years	32
20	been [verb] [pron] for years	32
21	been [verb] [adv prt] for years	24
22	been [verb] [adv] for years	22
23	been [verb] it for years	17
24	been [verb] it for years	17
25	been [verb] on for years	15
26	been [verb] on for years	15
27	been [verb] [noun] for years	11
28	been [verb] [adj] for years	8
29	been [verb] they for years	7
30	been [verb] them for years	7