SN4 ""

No	Pattern	Freq
1	[conj] [adv] you could have	12
2	[coord] [adv] you could have	7
3	[verb] [adv] you could have	6
4	[adv] [adv] you could have	6
5	[noun] [adv] you could have	6
6	and [adv] you could have	5
7	and [adv] you could have	5
8	[adv] [adv] you could have	5
9	[adv] [conj] you could have	15
10	[adv] [subord] you could have	8
11	[adv] [adj] you could have	7
12	[adv] that you could have	6
13	[adv] that you could have	6
14	[adv] [that] you could have	6
15	[adv] [adv] you could have	6
16	[adv] [adv] you could have	6
17	[adv] [adj] you could have	5
18	[adv] [verb] you could have	5
19	[adv] if you could have	5
20	[adv] if you could have	5
21	[adv] you could [adv] have	12
22	[adv] you could [not/n't] have	8
23	[adv] you could not have	8
24	[adv] you could n't have	6
25	[adv] you could have [vb pp]	40
26	[adv] you could have [verb]	40
27	[adv] you could have [art]	13
28	[adv] you could have [art]	13
29	[adv] you could have a	13
30	[adv] you could have [adj]	13