SN4 ""

No	Pattern	Freq
1	[conj] it has [adv] been [prep]	26
2	[subord] it has [adv] been [prep]	13
3	[coord] it has [adv] been [prep]	7
4	than it has [adv] been [prep]	6
5	[that] it has [adv] been [prep]	6
6	that it has [adv] been [prep]	6
7	that it has [adv] been [prep]	6
8	than it has [adv] been [prep]	6
9	it has [adv] been [verb] [prep]	239
10	it has [adv] been [vb pp] [prep]	236
11	it has [adv] been [adj] [prep]	57
12	it has [adv] been [adj] [prep]	45
13	it has [adv] been use [prep]	20
14	it has [adv] been used [prep]	19
15	it has [adv] been seen [prep]	7
16	it has [adv] been known [prep]	7
17	it has [adv] been see [prep]	7
18	it has [adv] been [num] [prep]	7
19	it has [adv] been [adv] [prep]	7
20	it has [adv] been one [prep]	7
21	it has [adv] been one [prep]	7
22	it has [adv] been know [prep]	7
23	it has [adv] been argued [prep]	6
24	it has [adv] been easy [prep]	6
25	it has [adv] been argue [prep]	6
26	it has [adv] been recorded [prep]	5
27	it has [adv] been possible [prep]	5
28	it has [adv] been shown [prep]	5
29	it has [adv] been easy [prep]	5
30	it has [adv] been [noun] [prep]	5