SN4 ""

No	Pattern	Freq
1	[noun prp] [noun prp] could have be	15
2	[noun] [noun prp] could have be	15
3	[prep] [noun prp] could have be	11
4	[prep] [noun prp] could have be	11
5	[conj] [noun prp] could have be	10
6	the [noun prp] could have be	7
7	[art] [noun prp] could have be	7
8	[that] [noun prp] could have be	7
9	[art] [noun prp] could have be	7
10	that [noun prp] could have be	7
11	the [noun prp] could have be	7
12	that [noun prp] could have be	7
13	[verb] [noun prp] could have be	6
14	of [noun prp] could have be	5
15	[vb past] [noun prp] could have be	5
16	[adv] [noun prp] could have be	5
17	of [noun prp] could have be	5
18	[noun prp] [noun] could have be	25
19	[noun prp] [noun prp] could have be	15
20	[noun prp] [noun sg] could have be	9
21	[noun prp] [pron] could have be	5
22	[noun prp] could [adv] have be	45
23	[noun prp] could [not/n't] have be	27
24	[noun prp] could not have be	27
25	[noun prp] could not have be	22
26	[noun prp] could [adv] have be	18
27	[noun prp] could hardly have be	6
28	[noun prp] could hardly have be	6
29	[noun prp] could n't have be	5
30	[noun prp] could have be [verb]	42