SN4 ""

No	Pattern	Freq
1	have [adv] been [noun] [prep]	227
2	have [adv] been [noun sg] [prep]	157
3	have [adv] been [noun] of	119
4	have [adv] been [noun pl] [prep]	108
5	had [adv] been [noun] [prep]	96
6	have [adv] been [noun] [prep]	85
7	has [adv] been [noun] [prep]	64
8	have also been [noun] [prep]	52
9	have also been [noun] [prep]	52
10	have [adv] been [noun] in	47
11	have [adv] been part [prep]	44
12	have [adv] been part [prep]	44
13	have [not/n't] been [noun] [prep]	43
14	have not been [noun] [prep]	43
15	have always been [noun] [prep]	36
16	have always been [noun] [prep]	36
17	have not been [noun] [prep]	27
18	have never been [noun] [prep]	23
19	have never been [noun] [prep]	23
20	have [adv] been [noun] for	21
21	have long been [noun] [prep]	19
22	have long been [noun] [prep]	19
23	have n't been [noun] [prep]	16
24	have [adv] been [noun] to	16
25	have [adv] been [noun] on	14
26	's [adv] been [noun] [prep]	12
27	have once been [noun] [prep]	12
28	have once been [noun] [prep]	12
29	have [adv] been [noun] at	11
30	have previously been [noun] [prep]	10