SN4 ""

No	Pattern	Freq
1	[be] not at [art]	136
2	be not at [art]	136
3	[conj] not at [art]	95
4	[coord] not at [art]	79
5	[was/were] not at [art]	64
6	but not at [art]	51
7	but not at [art]	51
8	was not at [art]	43
9	[is] not at [art]	42
10	is not at [art]	38
11	[verb] not at [art]	34
12	[am/are] not at [art]	29
13	and not at [art]	21
14	were not at [art]	21
15	and not at [art]	21
16	are not at [art]	18
17	[adv] not at [art]	17
18	[modal v] not at [art]	17
19	[vb mod] not at [art]	17
20	[subord] not at [art]	16
21	can not at [art]	15
22	[adv] not at [art]	14
23	[noun] not at [art]	11
24	[vb past] not at [art]	11
25	do not at [art]	11
26	[vb -s] not at [art]	10
27	[noun sg] not at [art]	8
28	have not at [art]	8
29	can not at [art]	8
30	if not at [art]	7