# Anders Björner and Frank H. Lutz. Simplicial manifolds, 
# bistellar flips and a 16-vertex triangulation 
# of the Poincaré homology 3-sphere. 
# Exp. Math. 9, 275-289 (2000).

# Anders Björner and Frank H. Lutz.
# A 16-vertex triangulation of the Poincaré homology 3-sphere 
# and non-PL spheres with few vertices. 
# Electronic Geometry Models, No. 2003.04.001 (2003).

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  [ 1, 8, 10, 13 ], [ 1, 9, 11, 12 ], [ 1, 9, 11, 14 ], [ 1, 10, 13, 15 ], 
  [ 2, 3, 5, 10 ], [ 2, 3, 5, 11 ], [ 2, 3, 7, 10 ], [ 2, 3, 7, 13 ], 
  [ 2, 3, 11, 13 ], [ 2, 4, 9, 13 ], [ 2, 4, 11, 13 ], [ 2, 4, 11, 15 ], 
  [ 2, 5, 8, 11 ], [ 2, 5, 8, 12 ], [ 2, 5, 10, 12 ], [ 2, 6, 10, 12 ], 
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  [ 11, 13, 14, 16 ], [ 12, 13, 14, 15 ], [ 13, 14, 15, 16 ] ]