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― Configuration code: RRmUmDUmULmU
- Start from
- Deform the shape by slightly pushing the internal side of the far vertical wall and
pushing up the internal side of the top horizontal roof
- Simultaneously open the two flaps untill they become coplanar and make them
stack onto adjacent nearby tiles
- By insisting with the deformation arrive into a flat shape made of three stacks
of tiles (in the shape of a gnomon)
- The two tiles that were originally flaps are now adjacent and can be rotated 180 degrees
- By opening the resulting structure you get the final shape
