SN4 ""

No	Pattern	Freq
1	has been [vb pp] by	4288
2	has [been] [vb pp] by	4288
3	has [been] replaced by	119
4	has [been] made by	80
5	has [been] used by	58
6	has [been] developed by	56
7	has [been] launched by	52
8	has [been] provided by	48
9	has [been] accompanied by	45
10	has [been] described by	45
11	has [been] hit by	42
12	has [been] achieved by	41
13	has [been] suggested by	41
14	has [been] approved by	41
15	has [been] adopted by	40
16	has [been] welcomed by	40
17	has [been] organised by	38
18	has [been] caused by	38
19	has [been] done by	35
20	has [been] published by	35
21	has [been] affected by	32
22	has [been] given by	31
23	has [been] shown by	30
24	has [been] taken by	30
25	has [been] supported by	28
26	has [been] discussed by	27
27	has [been] dominated by	27
28	has [been] won by	27
29	has [been] produced by	27
30	has [been] attacked by	27