SN4 ""

No	Pattern	Freq
1	would have been [adj]	2297
2	would have [been] [adj]	2202
3	would have [been] [adj]	1837
4	would have [been] [adj -er]	233
5	would have [been] good	134
6	would have [been] [num]	119
7	would have [been] better	115
8	would have [been] [det]	97
9	'd have [been] [adj]	95
10	would have [been] able	82
11	would have [been] able	82
12	would have [been] impossible	81
13	would have [been] impossible	81
14	would have [been] easy	69
15	would have [been] difficult	57
16	would have [been] difficult	57
17	would have [been] proud	49
18	would have [been] proud	49
19	would have [been] happy	48
20	would have [been] nice	45
21	would have [been] different	45
22	would have [been] different	45
23	would have [been] nice	44
24	would have [been] unthinkable	43
25	would have [been] unthinkable	43
26	would have [been] easy	40
27	would have [been] happy	38
28	would have [been] possible	32
29	would have [been] possible	32
30	would have [been] easier	29