SN4 ""

No	Pattern	Freq
1	[pron] could have gone	144
2	[pers pn] could have gone	136
3	i could have gone	41
4	i could have gone	41
5	[noun] could have gone	39
6	he could have gone	27
7	he could have gone	27
8	[noun sg] could have gone	20
9	they could have gone	16
10	it could have gone	16
11	they could have gone	16
12	it could have gone	16
13	we could have gone	13
14	we could have gone	12
15	she could have gone	12
16	she could have gone	12
17	[noun prp] could have gone	11
18	you could have gone	11
19	you could have gone	11
20	[conj] could have gone	11
21	[noun pl] could have gone	8
22	that could have gone	7
23	that could have gone	7
24	[that] could have gone	7
25	could [adv] have gone	38
26	could [not/n't] have gone	25
27	could not have gone	25
28	could n't have gone	16
29	could [adv] have gone	13
30	could not have gone	9