The present invention relates to a method for obtaining a high yield of sugar alcohols containing five to six carbon atoms from cellulose-containing materials. Statistical information is identified regarding each of the query terms and different permutations of the query terms. The second latch member comprises four hooked members each having a protrusion. An optical profilometer is described which can measure topography on thin film disks, optical substrates or silicon wafers and whose output is independent of the reflectivity of the substrate. In one embodiment, the first and third components are in the shape of a polygonal with a star appearance, and the second component is in the shape of a square.