SN4 ""

No	Pattern	Freq
1	have [verb] [be] to be	8
2	have [be] [verb] to be	622
3	have [be] [vb pp] to be	613
4	have [be] show to be	176
5	have [be] shown to be	176
6	have [be] found to be	143
7	have [be] find to be	143
8	have [be] [adj] to be	47
9	have [be] [adj] to be	47
10	have [be] hold to be	28
11	have [be] held to be	28
12	have [be] report to be	23
13	have [be] reported to be	23
14	have [be] prove to be	19
15	have [be] designed to be	16
16	have [be] design to be	16
17	have [be] proved to be	14
18	have [be] expect to be	13
19	have [be] expected to be	12
20	have [be] consider to be	12
21	have [be] said to be	12
22	have [be] say to be	12
23	have [be] considered to be	12
24	have [be] assumed to be	11
25	have [be] assume to be	11
26	have [be] thought to be	10
27	have [be] think to be	10
28	have [be] know to be	9
29	have [be] known to be	9
30	have [be] [v-ing] to be	8