// Cells and their vertices.
#0={0}
#1={1,2,3,5,8,11,15}
#2={4,6,7,9,10,12,13,14}

// Induced graph on cells.
#0:.
#1:->#0.
#2:->#1.

// Individual cells.
// cell #0:
0[0]: {}

// cell #1:
0[1]: {2} --> 1,2
1[2]: {3} --> 0,3
2[3]: {1} --> 0
3[5]: {4} --> 1,4
4[8]: {3} --> 3,5
5[11]: {2} --> 4,6
6[15]: {1} --> 5

// cell #2:
0[4]: {1,3} --> 1,2,7
1[6]: {2} --> 0
2[7]: {1,4} --> 0,3,4
3[9]: {2,4} --> 1,2,5,7
4[10]: {1,3} --> 2,5,6
5[12]: {2,3} --> 3,4
6[13]: {1,2} --> 4
7[14]: {3} --> 3