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― Configuration code: RRmRmULmUmUvLm
- 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