1[[0,0,1],[1,1,1],[2,1,1],[3,0,1],[2,-1,1],[1,-1,1]] 2[[1,2,3,4,5,0],[5,4,3,2,1,0]] 3{{0,2,4},{0,1,2},{0,4,5},{2,3,4},{1,2,3},{5,0,1},{3,4,5},{1,3,5}}