SN4 ""

No	Pattern	Freq
1	[noun] have been known [prep] [det]	17
2	[pers pn] have been known [prep] [det]	16
3	[pron] have been known [prep] [det]	16
4	it have been known [prep] [det]	14
5	it have been known [prep] [det]	14
6	[noun sg] have been known [prep] [det]	9
7	[noun pl] have been known [prep] [det]	7
8	have been known [prep] [det] [noun]	34
9	have been known [prep] [det] [noun sg]	18
10	have been known [prep] [det] time	16
11	have been known [prep] [det] time	16
12	have been known [prep] [det] [noun pl]	16
13	have been known [prep] [det] year	15
14	have been known [prep] [det] years	15