SN4 ""

No	Pattern	Freq
1	[verb] to have been a [noun sg]	129
2	seem to have been a [noun sg]	59
3	[vb -s] to have been a [noun sg]	53
4	seems to have been a [noun sg]	39
5	[vb pp] to have been a [noun sg]	38
6	appear to have been a [noun sg]	19
7	[vb infin] to have been a [noun sg]	17
8	[adv] to have been a [noun sg]	14
9	[vb base] to have been a [noun sg]	14
10	[adj] to have been a [noun sg]	14
11	[adj] to have been a [noun sg]	13
12	think to have been a [noun sg]	13
13	thought to have been a [noun sg]	13
14	appears to have been a [noun sg]	12
15	seem to have been a [noun sg]	11
16	[noun] to have been a [noun sg]	10
17	[adv] to have been a [noun sg]	8
18	seem to have been a [noun sg]	8
19	[vb past] to have been a [noun sg]	7
20	believe to have been a [noun sg]	7
21	believed to have been a [noun sg]	6
22	likely to have been a [noun sg]	6
23	[noun sg] to have been a [noun sg]	6
24	likely to have been a [noun sg]	6
25	be to have been a [noun sg]	5
26	[not/n't] to have been a [noun sg]	5
27	was to have been a [noun sg]	5
28	[be] to have been a [noun sg]	5
29	[pron] to have been a [noun sg]	5
30	not to have been a [noun sg]	5