Method for obtaining an output stream of mutually different graphic products in a desired order, comprising in a pre-processing phase, based on the desired order in the output stream, pre-processing the products in an order in which the graphic products are to be transported through and assembled in an assembly line, in a processing phase, transporting the products through and assembling the products in the assembly line, dividing the products over at least two sublines along which the products are transported with respective variable subline transport speeds, such that in at least one of the sublines the products undergo at least one additional operation, merging the products of the sublines in a single downstream transport line along which the products are transported, and wherein during the processing phase, the respective subline transport speeds are controlled such that the respective sublines and the downstream transport line are completely filled with the products.