SN4 ""

No	Pattern	Freq
1	[verb] not have a	950
2	do not have a	797
3	[vb base] not have a	390
4	do not have a	330
5	[vb past] not have a	277
6	[vb -s] not have a	270
7	does not have a	240
8	did not have a	227
9	[modal v] not have a	200
10	[vb mod] not have a	200
11	have not have a	129
12	[be] not have a	60
13	be not have a	60
14	[prep] not have a	58
15	[prep] not have a	58
16	can not have a	47
17	can not have a	47
18	have not have a	42
19	had not have a	41
20	[am/are] not have a	38
21	may not have a	37
22	may not have a	37
23	[noun] not have a	35
24	will not have a	34
25	[adv] not have a	33
26	will not have a	32
27	[pron] not have a	28
28	would not have a	28
29	[conj] not have a	28
30	would not have a	27