SN4 ""

No	Pattern	Freq
1	[be] not at	1184
2	be not at	1184
3	[was/were] not at	536
4	was not at	436
5	[is] not at	384
6	is not at	336
7	[conj] not at	335
8	[coord] not at	299
9	[am/are] not at	260
10	[verb] not at	231
11	do not at	123
12	and not at	118
13	and not at	118
14	are not at	111
15	but not at	105
16	but not at	105
17	were not at	100
18	[vb past] not at	96
19	[vb mod] not at	77
20	[modal v] not at	77
21	or not at	76
22	or not at	76
23	[adv] not at	75
24	'm not at	73
25	did not at	64
26	[adv] not at	64
27	[noun] not at	57
28	[vb -s] not at	55
29	're not at	50
30	's not at	48