SN4 ""

No	Pattern	Freq
1	would have been [verb]	1736
2	would have [been] [verb]	1721
3	would have [been] [verb]	1659
4	would have [been] [vb pp]	1413
5	would have [been] [v-ing]	203
6	would have [been] [to-vb]	108
7	'd have [been] [verb]	77
8	would have [been] make	38
9	would have [been] made	34
10	would have [been] have	34
11	would have [been] expect	26
12	would have [been] do	26
13	would have [been] expected	25
14	would have [been] use	24
15	would have [been] lost	23
16	would have [been] used	23
17	would have [been] lose	23
18	would have [been] required	21
19	would have [been] require	21
20	would have [been] leave	20
21	would have [been] consider	19
22	would have [been] considered	19
23	would have [been] pay	18
24	would have [been] give	18
25	would have [been] take	18
26	would have [been] left	16
27	would have [been] taken	16
28	would have [been] paid	16
29	would have [been] regarded	15
30	would have [been] regard	15