SN4 ""

No	Pattern	Freq
1	[verb] if they know	27
2	[noun] if they know	25
3	[adv] if they know	22
4	[adv] if they know	20
5	[noun sg] if they know	16
6	[pron] if they know	13
7	[pers pn] if they know	12
8	even if they know	11
9	even if they know	11
10	[conj] if they know	10
11	[vb base] if they know	10
12	[adj] if they know	9
13	[adj] if they know	9
14	[vb infin] if they know	9
15	[prep] if they know	8
16	[prep] if they know	8
17	as if they know	7
18	as if they know	7
19	wonder if they know	6
20	they if they know	5
21	them if they know	5
22	[coord] if they know	5
23	if [adv] they know	11
24	if only they know	11
25	if only they know	11
26	if [adv] they know	11
27	if they [verb] know	31
28	if they [vb past] know	23
29	if they have know	17
30	if they had know	13