SN4 ""

No	Pattern	Freq
1	[vb mod] not [verb] [adv] and	91
2	[modal v] not [verb] [adv] and	91
3	[verb] not [verb] [adv] and	88
4	[be] not [verb] [adv] and	78
5	be not [verb] [adv] and	78
6	do not [verb] [adv] and	61
7	[vb past] not [verb] [adv] and	52
8	did not [verb] [adv] and	38
9	can not [verb] [adv] and	32
10	can not [verb] [adv] and	32
11	[is] not [verb] [adv] and	27
12	[was/were] not [verb] [adv] and	27
13	[am/are] not [verb] [adv] and	24
14	will not [verb] [adv] and	23
15	have not [verb] [adv] and	23
16	will not [verb] [adv] and	21
17	is not [verb] [adv] and	20
18	could not [verb] [adv] and	19
19	could not [verb] [adv] and	19
20	[adv] not [verb] [adv] and	19
21	[vb base] not [verb] [adv] and	19
22	[vb -s] not [verb] [adv] and	16
23	why not [verb] [adv] and	16
24	[Wh adv] not [verb] [adv] and	16
25	why not [verb] [adv] and	16
26	are not [verb] [adv] and	15
27	do not [verb] [adv] and	15
28	was not [verb] [adv] and	14
29	[pron] not [verb] [adv] and	13
30	[pers pn] not [verb] [adv] and	13