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EC Tree
4.1.99.4 created 1981, deleted 2002
4.1.99.6 created 1989, deleted 2000
4.1.99.7 created 1992 as EC 2.5.1.40, transferred 1999 to EC 4.1.99.7, deleted 2000
4.1.99.8 created 2000, deleted 2000
4.1.99.9 created 2000, deleted 2000
4.1.99.10 created 2000, deleted 2000