SN4 ""

No	Pattern	Freq
1	[verb] to be [vb pp] to [be]	107
2	have to be [vb pp] to [be]	71
3	[vb -s] to be [vb pp] to [be]	36
4	[vb past] to be [vb pp] to [be]	27
5	has to be [vb pp] to [be]	26
6	had to be [vb pp] to [be]	25
7	[noun] to be [vb pp] to [be]	23
8	[vb infin] to be [vb pp] to [be]	19
9	[noun sg] to be [vb pp] to [be]	17
10	[adj] to be [vb pp] to [be]	17
11	[adj] to be [vb pp] to [be]	14
12	[be] to be [vb pp] to [be]	14
13	be to be [vb pp] to [be]	14
14	[adv] to be [vb pp] to [be]	14
15	[vb base] to be [vb pp] to [be]	13
16	want to be [vb pp] to [be]	11
17	have to be [vb pp] to [be]	9
18	need to be [vb pp] to [be]	9
19	is to be [vb pp] to [be]	8
20	[is] to be [vb pp] to [be]	8
21	have to be [vb pp] to [be]	8
22	not to be [vb pp] to [be]	7
23	not to be [vb pp] to [be]	7
24	want to be [vb pp] to [be]	7
25	[not/n't] to be [vb pp] to [be]	7
26	[adv] to be [vb pp] to [be]	7
27	[v-ing] to be [vb pp] to [be]	6
28	[noun pl] to be [vb pp] to [be]	6
29	needs to be [vb pp] to [be]	5
30	to be [vb pp] [conj] to [be]	20