SN4 ""

No	Pattern	Freq
1	would have [been] [adj]	1863
2	would have been [adj]	1863
3	would have be [adj]	1863
4	would have [be] [adj]	1837
5	would have [be] [adj]	1787
6	would have [be] able	83
7	would have [be] impossible	81
8	'd have [be] [adj]	76
9	would have [be] difficult	58
10	would have [be] proud	49
11	would have [be] different	49
12	would have [be] nice	45
13	would have [be] unthinkable	43
14	would have [be] easy	40
15	would have [be] happy	38
16	would have [be] possible	32
17	would have [be] necessary	27
18	would 've [be] [adj]	26
19	would have [be] delighted	25
20	would have [be] hard	25
21	would have [be] unable	24
22	would have [be] good	18
23	would have [be] entitled	18
24	would have [be] sufficient	16
25	would have [be] useful	15
26	would have [be] available	14
27	would have [be] interesting	14
28	would have [be] unlikely	13
29	would have [be] ideal	13
30	would have [be] pleased	13