SN4 ""

No	Pattern	Freq
1	[noun] have [been] [vb pp] to be	118
2	[noun pl] have [been] [vb pp] to be	81
3	[noun sg] have [been] [vb pp] to be	31
4	[pron] have [been] [vb pp] to be	25
5	[pers pn] have [been] [vb pp] to be	12
6	[Wh det] have [been] [vb pp] to be	11
7	which have [been] [vb pp] to be	10
8	[conj] have [been] [vb pp] to be	10
9	which have [been] [vb pp] to be	10
10	[that] have [been] [vb pp] to be	7
11	that have [been] [vb pp] to be	7
12	they have [been] [vb pp] to be	7
13	they have [been] [vb pp] to be	7
14	that have [been] [vb pp] to be	7
15	[adj] have [been] [vb pp] to be	6
16	have [adv] [been] [vb pp] to be	25
17	have [adv] [been] [vb pp] to be	21
18	have recently [been] [vb pp] to be	6
19	have recently [been] [vb pp] to be	6
20	have [been] [vb pp] [adv] to be	9
21	have [been] [vb pp] not to be	5
22	have [been] [vb pp] [not/n't] to be	5
23	have [been] [vb pp] not to be	5
24	have [been] [vb pp] to be [adj]	71
25	have [been] [vb pp] to be [adj]	67
26	have [been] [vb pp] to be [adv]	45
27	have [been] [vb pp] to be [adv]	45
28	have [been] [vb pp] to be [verb]	28
29	have [been] [vb pp] to be [vb pp]	24
30	have [been] [vb pp] to be [prep]	15