SN4 ""

No	Pattern	Freq
1	have [vb pp] to be	2907
2	have got to be	1110
3	has [vb pp] to be	674
4	had [vb pp] to be	569
5	have [vb pp] to be	499
6	've [vb pp] to be	472
7	's [vb pp] to be	452
8	have had to be	285
9	have proved to be	277
10	have come to be	210
11	have [vb pp] to be	177
12	have ceased to be	117
13	have tended to be	110
14	have continued to be	54
15	have seemed to be	46
16	'd [vb pp] to be	44
17	have wanted to be	42
18	have appeared to be	42
19	have expected to be	41
20	have tried to be	34
21	have begun to be	29
22	have agreed to be	28
23	have hoped to be	24
24	have liked to be	20
25	have asked to be	20
26	have learned to be	17
27	have promised to be	16
28	have decided to be	16
29	have chosen to be	16
30	have claimed to be	16