SN4 ""

No	Pattern	Freq
1	has been [to-vb]	553
2	had been [to-vb]	293
3	have been [to-vb]	150
4	have been to see	112
5	have been [to-vb]	38
6	've been [to-vb]	34
7	'd been [to-vb]	26
8	have been to make	23
9	have been to have	19
10	have been to give	18
11	have been to take	17
12	have been to try	15
13	have been to create	15
14	have been to reduce	14
15	have been to establish	14
16	have been to get	12
17	have been to build	12
18	's been [to-vb]	12
19	to have been [to-vb]	12
20	have been to do	12
21	have been to provide	12
22	have been to visit	11
23	have been to leave	11
24	have been to encourage	11
25	have been to put	11
26	have been to show	11
27	have been to bring	10
28	have been to ensure	10
29	have been to allow	9
30	have been to demonstrate	8