SN4 ""

No	Pattern	Freq
1	[adv] know whether it	176
2	[not/n't] know whether it	172
3	not know whether it	172
4	n't know whether it	160
5	not know whether it	12
6	[pron] know whether it	8
7	[pers pn] know whether it	8
8	you know whether it	7
9	you know whether it	7
10	[vb mod] know whether it	5
11	[modal v] know whether it	5
12	know whether [verb] it	7
13	know whether [to-vb] it	6
14	know whether it [be]	145
15	know whether it be	145
16	know whether it [is]	93
17	know whether it 's	86
18	know whether it [was/were]	52
19	know whether it was	50
20	know whether it [verb]	24
21	know whether it [vb -s]	17
22	know whether it [modal v]	16
23	know whether it [vb mod]	16
24	know whether it have	8
25	know whether it would	7
26	know whether it will	7
27	know whether it would	7
28	know whether it [vb past]	7
29	know whether it is	7
30	know whether it will	5