SN4 ""

No	Pattern	Freq
1	[pron] could not [adv]	425
2	[pers pn] could not [adv]	362
3	[noun] could not [adv]	284
4	[noun sg] could not [adv]	147
5	he could not [adv]	100
6	he could not [adv]	100
7	she could not [adv]	87
8	she could not [adv]	87
9	[noun pl] could not [adv]	73
10	[noun prp] could not [adv]	62
11	[conj] could not [adv]	60
12	i could not [adv]	50
13	i could not [adv]	50
14	they could not [adv]	48
15	they could not [adv]	48
16	[coord] could not [adv]	44
17	it could not [adv]	39
18	it could not [adv]	39
19	and could not [adv]	34
20	and could not [adv]	34
21	which could not [adv]	30
22	[Wh det] could not [adv]	30
23	which could not [adv]	30
24	who could not [adv]	22
25	[Wh pn] could not [adv]	22
26	who could not [adv]	22
27	you could not [adv]	21
28	you could not [adv]	21
29	[adj] could not [adv]	21
30	[det] could not [adv]	18