SN4 ""

No	Pattern	Freq
1	[vb mod] not therefore	115
2	[modal v] not therefore	115
3	[be] not therefore	85
4	be not therefore	85
5	[verb] not therefore	62
6	can not therefore	58
7	can not therefore	56
8	do not therefore	50
9	[is] not therefore	38
10	is not therefore	37
11	[was/were] not therefore	31
12	[vb base] not therefore	29
13	was not therefore	25
14	do not therefore	23
15	[vb -s] not therefore	17
16	[am/are] not therefore	16
17	[vb past] not therefore	16
18	are not therefore	15
19	does not therefore	14
20	will not therefore	14
21	did not therefore	13
22	should not therefore	13
23	should not therefore	13
24	will not therefore	12
25	could not therefore	12
26	could not therefore	12
27	have not therefore	11
28	may not therefore	6
29	[pers pn] not therefore	6
30	were not therefore	6