SN4 ""

No	Pattern	Freq
1	[pron] would have been [adv] [prep]	38
2	[pers pn] would have been [adv] [prep]	35
3	[noun] would have been [adv] [prep]	22
4	it would have been [adv] [prep]	18
5	it would have been [adv] [prep]	18
6	[noun sg] would have been [adv] [prep]	13
7	[det] would have been [adv] [prep]	5
8	[adj] would have been [adv] [prep]	5
9	she would have been [adv] [prep]	5
10	she would have been [adv] [prep]	5
11	would [adv] have been [adv] [prep]	16
12	would not have been [adv] [prep]	12
13	would [not/n't] have been [adv] [prep]	12
14	would n't have been [adv] [prep]	7
15	would not have been [adv] [prep]	5
16	would have been [verb] [adv] [prep]	82
17	would have been [vb pp] [adv] [prep]	71
18	would have been [adj] [adv] [prep]	22
19	would have been [adj] [adv] [prep]	20
20	would have been [adv] [adv] [prep]	16
21	would have been [adv] [adv] [prep]	12
22	would have been [v-ing] [adv] [prep]	9
23	would have been [adv] [adj] [prep]	148
24	would have been [adv] [adj] [prep]	133
25	would have been [adv] [verb] [prep]	49
26	would have been [adv] [vb pp] [prep]	47
27	would have been [adv] [adv] [prep]	16
28	would have been [adv] [adv] [prep]	8
29	would have been [adv] [adv prt] [prep]	8
30	would have been [adv] [adj -er] [prep]	7