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

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• Start from
• Rotate the set of three mutually orthogonal tiles 90 degrees so that one of the three tiles stacks against the bottom tile of the box
• This latter tile becomes a flap that can be rotated 90 degrees inside the box
• A newly formed flap can now be rotated 90 degrees in the final shape