17 are side by side on the marker rather than trying to move the shuttling bin rapidly enough to pick up both pieces in their 34 proper 34 locations proper as defined by the isomorphic garment assembly order both pieces are picked up at the same time remaining side by side in the shuttling bin as long as we know where they are the intermediate order of garment parts in the shuttling bins can be unscrambled in the process of dropping garment parts to form the collated garment assembly pile this approach can be called collation on drop off given the degree of flexibility offered by the above approach in which any order of garment parts in the shuttling bin is acceptable in principle the question of how a specific intermediate ordering is selected for use must be answered the primary requirement is that all location conflicts be adequately resolved beyond this however the position of the garment pieces on the shuttling bin is determined by a tradeoff analysis between the speed and acceleration of the shuttling bin the length of shuttling bin required for the placement of garment pieces under consideration the amount of motion required to place each garment piece into an empty location on the shuttling bin and the amount of motion required.