SN4 ""

No	Pattern	Freq
1	to have been [vb pp] [prep]	1532
2	to have been [verb] by	515
3	to have been [verb] in	290
4	to have been [verb] to	119
5	to have been [verb] on	97
6	to have been [verb] for	91
7	to have been [verb] from	87
8	to have been [verb] with	80
9	to have been made [prep]	73
10	to have been make [prep]	73
11	to have been [verb] at	65
12	to have been [v-ing] [prep]	55
13	to have been [verb] as	41
14	to have been used [prep]	34
15	to have been use [prep]	34
16	to have been caused [prep]	33
17	to have been cause [prep]	33
18	to have been taken [prep]	30
19	to have been take [prep]	30
20	to have been killed [prep]	29
21	to have been kill [prep]	29
22	to have been [verb] into	27
23	to have been built [prep]	26
24	to have been build [prep]	26
25	to have been bear [prep]	25
26	to have been born [prep]	24
27	to have been write [prep]	23
28	to have been written [prep]	22
29	to have been held [prep]	20
30	to have been hold [prep]	20