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Symmetries:
Planar + planar + axial symmetries (Dihedral D2, order 4)
Three configurations for this shape
(click on the image for building instructions):
1: 
[chiral, two flaps, self-twin, code: RmRmUmLmLmDvDmDv]
2: 
[chiral, two flaps, twin: 3, code: RmRmUmLmLvRmLvDm] [MP - 26/10/2014]
3: 
[chiral, two flaps, twin: 2, code: RmRmDmLmLvRmLvUm]
