SN4 ""

No	Pattern	Freq
1	[be] known to	720
2	be known to	720
3	[adv] known to	465
4	[adv] known to	379
5	[noun] known to	353
6	[is] known to	235
7	is known to	230
8	[was/were] known to	225
9	[noun sg] known to	175
10	well known to	174
11	[noun pl] known to	163
12	well known to	149
13	was known to	148
14	[am/are] known to	142
15	are known to	140
16	[not/n't] known to	86
17	not known to	86
18	[verb] known to	83
19	not known to	80
20	were known to	77
21	be known to	64
22	[be] known to	64
23	[been] known to	49
24	been known to	49
25	[conj] known to	45
26	[pron] known to	44
27	make known to	41
28	[adj] known to	40
29	best known to	38
30	best known to	38