SN4 ""

No	Pattern	Freq
1	[noun] and could not be	38
2	[noun sg] and could not be	29
3	[adj] and could not be	14
4	[adj] and could not be	13
5	[verb] and could not be	13
6	[adv] and could not be	8
7	[vb pp] and could not be	8
8	[modal v] and could not be	5
9	[vb mod] and could not be	5
10	[noun pl] and could not be	5
11	could and could not be	5
12	could and could not be	5
13	and [noun] could not be	32
14	and [adv] could not be	23
15	and [adv] could not be	23
16	and [noun sg] could not be	16
17	and [pron] could not be	15
18	and [pers pn] could not be	14
19	and [noun pl] could not be	12
20	and it could not be	9
21	and it could not be	9
22	and therefore could not be	8
23	and therefore could not be	8
24	and [adj] could not be	7
25	and so could not be	6
26	and so could not be	6
27	and could not [adv] be	15
28	and could not [adv] be	15
29	and could not [vb infin] be	15
30	and could not [verb] be	15