SN4 ""

No	Pattern	Freq
1	[verb] to have been [to-vb]	12
2	[vb -s] to have been [to-vb]	10
3	appear to have been [to-vb]	6
4	appears to have been [to-vb]	5
5	to have been [verb] [to-vb]	78
6	to have been [vb pp] [to-vb]	73
7	to have been [adj] [to-vb]	72
8	to have been [adj] [to-vb]	69
9	to have been able [to-vb]	43
10	to have been able [to-vb]	43
11	to have been used [to-vb]	10
12	to have been use [to-vb]	10
13	to have been anxious [to-vb]	7
14	to have been anxious [to-vb]	7
15	to have been asked [to-vb]	6
16	to have been choose [to-vb]	6
17	to have been ask [to-vb]	6
18	to have been chosen [to-vb]	6
19	to have been invited [to-vb]	5
20	to have been invite [to-vb]	5
21	to have been do [to-vb]	5
22	to have been [v-ing] [to-vb]	5
23	to have been done [to-vb]	5
24	to have been [to-vb] the	5
25	to have been [to-vb] [art]	5
26	to have been [to-vb] [art]	5
27	to have been [to-vb] the	5