SN4 ""

No	Pattern	Freq
1	might have been [verb]	901
2	might have been [vb pp]	758
3	might have been [v-ing]	135
4	might have been expect	119
5	might have been expected	119
6	might have been use	25
7	might have been used	23
8	might have been think	21
9	might have been thought	19
10	might have been make	18
11	might have been made	16
12	might have been take	16
13	might have been write	14
14	might have been written	13
15	might have been avoid	12
16	might have been avoided	12
17	might have been taken	12
18	might have been saved	11
19	might have been save	11
20	might have been forgiven	10
21	might have been have	10
22	might have been forgive	10
23	might have been do	10
24	might have been say	10
25	might have been cause	9
26	might have been caused	9
27	might have been see	9
28	might have been regard	8
29	might have been achieved	8
30	might have been tempt	8