SN4 ""

No	Pattern	Freq
1	[pron] could be [det] [noun]	115
2	there could be [det] [noun]	57
3	there could be [det] [noun]	57
4	[ex0] could be [det] [noun]	57
5	[pers pn] could be [det] [noun]	51
6	it could be [det] [noun]	48
7	it could be [det] [noun]	48
8	[noun] could be [det] [noun]	16
9	[noun sg] could be [det] [noun]	8
10	[adj] could be [det] [noun]	7
11	[det] could be [det] [noun]	7
12	[Wh det] could be [det] [noun]	5
13	[noun prp] could be [det] [noun]	5
14	could [adv] be [det] [noun]	34
15	could [verb] be [det] [noun]	33
16	could [vb infin] be [det] [noun]	33
17	could have be [det] [noun]	30
18	could have be [det] [noun]	29
19	could [adv] be [det] [noun]	24
20	could [pron] be [det] [noun]	12
21	could [not/n't] be [det] [noun]	10
22	could not be [det] [noun]	10
23	could n't be [det] [noun]	8
24	could it be [det] [noun]	7
25	could [pers pn] be [det] [noun]	7
26	could it be [det] [noun]	7
27	could there be [det] [noun]	5
28	could never be [det] [noun]	5
29	could never be [det] [noun]	5
30	could well be [det] [noun]	5