manifold_cyc_d2_n7_#1=[[1,2,4],[1,2,6],[1,3,4],[1,3,7],[1,5,6],[1,5,7],
  [2,3,5],[2,3,7],[2,4,5],[2,6,7],[3,4,6],[3,5,6],[4,5,7],[4,6,7]]