cut most cost of revisiting the same symbolik objects in _reduce
cut most cost of revisiting the same symbolik objects in _reduce

bat-serjo/vivisect,vivisect/vivisect,atlas0fd00m/vivisect,cmaruti/vivisect,cmaruti/vivisect,vivisect/vivisect,atlas0fd00m/vivisect,bat-serjo/vivisect,cmaruti/vivisect,vivisect/vivisect,atlas0fd00m/vivisect,bat-serjo/vivisect