SN4 ""

No	Pattern	Freq
1	[noun] [adv] [verb] to be	1345
2	[noun] [adv] [vb -s] to be	442
3	[noun] [adv] [vb base] to be	379
4	[noun] [adv] [vb past] to be	290
5	[noun] [adv] have to be	287
6	[noun] [adv] seem to be	221
7	[noun] [adv] need to be	186
8	[noun] [adv] [vb pp] to be	170
9	[noun] [adv] [adj] to be	162
10	[noun] [adv] [adj] to be	157
11	[noun] [adv] appear to be	108
12	[noun] [adv] seems to be	102
13	[noun] [adv] had to be	97
14	[noun] [adv] has to be	96
15	[noun] [adv] have to be	87
16	[noun] [adv] needs to be	86
17	[noun] [adv] need to be	85
18	[noun] [adv] likely to be	79
19	[noun] [adv] likely to be	79
20	[noun] [adv] tend to be	73
21	[noun] [adv] seem to be	66
22	[noun] [adv] [conj] to be	58
23	[noun] [adv] appears to be	53
24	[noun] [adv] seemed to be	53
25	[noun] [adv] [v-ing] to be	49
26	[noun] [adv] [subord] to be	49
27	[noun] [adv] as to be	45
28	[noun] [adv] as to be	45
29	[noun] [adv] [adv] to be	44
30	[noun] [adv] prove to be	41