The present invention provides a redundant break before make digital circuit. The method includes filtering an initial candidate set of data nodes from among the plurality of interconnected data nodes by performing a partial comparison process of a member of the initial candidate set with the target data node. The rake face is located on a top surface of the body. Further, in a method of pre-processing financial accounting data prior to analysis of the data, the financial accounting data is abstracted to correspond to a pre-stored accounting ontology. A vehicle includes two steerable propulsion wheels coupled to a chassis.