SN4 ""

No	Pattern	Freq
1	have previously been [verb] [prep]	165
2	have previously been [vb pp] [prep]	159
3	had previously been [verb] [prep]	92
4	has previously been [verb] [prep]	44
5	have previously been [verb] to	36
6	have previously been [verb] to	36
7	have previously been [verb] in	31
8	have previously been [verb] in	31
9	have previously been [verb] by	27
10	have previously been [verb] by	27
11	have previously been [verb] [prep]	24
12	have previously been [verb] as	13
13	have previously been [verb] as	13
14	have previously been [verb] from	11
15	have previously been [verb] from	11
16	have previously been [verb] with	10
17	have previously been [verb] with	10
18	have previously been show [prep]	9
19	have previously been shown [prep]	9
20	have previously been [verb] for	8
21	have previously been [verb] for	8
22	have previously been [verb] on	7
23	have previously been [verb] on	7
24	have previously been [v-ing] [prep]	6
25	have previously been reported [prep]	5
26	have previously been held [prep]	5
27	have previously been [verb] at	5
28	have previously been hold [prep]	5
29	have previously been [verb] at	5
30	have previously been report [prep]	5