SN4 ""

No	Pattern	Freq
1	[modal v] have known that the	19
2	[vb mod] have known that the	19
3	must have known that the	7
4	[pron] have known that the	7
5	ought have known that the	7
6	ought have known that the	7
7	must have known that the	7
8	[pers pn] have known that the	6
9	have [pers pn] known that the	6
10	have [pron] known that the	6
11	have known that the [noun]	33
12	have known that the [noun sg]	21
13	have known that the [noun pl]	9