Methods for searching relationships between and among documents are detailed. The grid array package also includes a polar pattern of electrical contacts inside of, and concentric with, the rectangular pattern. In one embodiment, the system includes an orifice mount having a high-pressure fluid bore and an abrasive bore configured to communicate an abrasive mixture in form of a paste or foam to at least a portion of the high-pressure fluid bore. The pressure-measuring pipe is disposed within said one of the second conduits, and has one end extending into the first conduit in proximity to the nasal prongs. The compressible member may be polyaxially adjustable relative to the coupling member.