Mechanical assembly of magnesium alloy with steel or titaniumtitanium alloy parts. This invention thus relates to the seeds of soybean variety XB26R06, to the plants of soybean XB26R06 to plant parts of soybean variety XB26R06 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB26R06 with another soybean plant, using XB26R06 as either the male or the female parent. The disclosed example includes a first positioner member that remains in a fixed position. A mathematical programming problem formed by the objective function, and the first, second and third constraint equations is solved to obtain a plurality of trees in which the communication paths can be accommodated. The polypeptides that can be generated according to the methods of the invention are highly variable, and they can include antibodies and fusion proteins that contain an Fc region or a biologically active portion thereof.