0: [[0,1,2,3],[0,1,2,6],[0,1,3,6],[0,2,3,4],[0,2,4,5],[0,2,5,6],[0,3,4,6],[0,4,5,6],[1,2,3,4],[1,2,4,5],[1,2,5,6],[1,3,4,5],[1,3,5,6],[3,4,5,6]]