SN4 ""

No	Pattern	Freq
1	have been [noun sg]	1962
2	had been [noun]	1451
3	have been [noun pl]	1401
4	have been [noun]	847
5	have been [noun]	834
6	have been [noun prp]	797
7	has been [noun]	684
8	have been part	183
9	have been part	182
10	to have been [noun]	141
11	's been [noun]	130
12	have been [n mass]	128
13	've been [noun]	93
14	'd been [noun]	67
15	have been friend	48
16	have been friends	47
17	have been member	45
18	have been members	44
19	have been president	40
20	having been [noun]	39
21	have been time	37
22	have been change	37
23	have been president	36
24	have been changes	35
25	have been attempts	35
26	have been attempt	35
27	have been chairman	31
28	have been chairman	31
29	have been cases	30
30	have been victim	30