[previous configuration] [up to this 3D shape] [next configuration] ― Configuration code: RRmUmDUmRvLmRv

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• Start from
• Push the protruding flap tile parallel to itself (three internal tiles will move accordingly) untill you get a stack of three tiles
• Two of these three stacked tiles are flaps that can be rotated of 90 and 180 degrees into the final shape