SN4 ""

No	Pattern	Freq
1	[conj] [det] could not be	35
2	[that] [det] could not be	16
3	that [det] could not be	16
4	that [det] could not be	16
5	[coord] [det] could not be	15
6	the [det] could not be	14
7	the [det] could not be	14
8	[art] [det] could not be	14
9	[art] [det] could not be	14
10	but [det] could not be	10
11	but [det] could not be	10
12	[adv] [det] could not be	8
13	[adv] [det] could not be	7
14	and [det] could not be	5
15	surely [det] could not be	5
16	surely [det] could not be	5
17	and [det] could not be	5
18	[verb] [det] could not be	5
19	[det] [noun] could not be	97
20	[det] [noun sg] could not be	64
21	[det] [noun pl] could not be	33
22	[det] [pron] could not be	12
23	[det] who could not be	6
24	[det] who could not be	6
25	[det] [Wh pn] could not be	6
26	[det] could not [adv] be	11
27	[det] could not [adv] be	11
28	[det] could not have be	8
29	[det] could not [vb infin] be	8
30	[det] could not [verb] be	8