// Cells and their vertices.
#0={0,1,3,4,5,8,9,10,11,14,15,16,19,20,23}
#1={2,7,13,18,22,25}
#2={6,12,17,21,24,26}
#3={27}

// Induced graph on cells.
#0:.
#1:->#0.
#2:->#0.
#3:->#1,#2.

// Individual cells.
// cell #0:
0[0]: {1,2,3,4} --> 5
1[1]: {1,2,3,6} --> 5,6
2[3]: {1,2,5,6} --> 6,7
3[4]: {1,4,5,6} --> 7,8
4[5]: {3,4,5,6} --> 8
5[8]: {1,2,3,5} --> 0,1,9
6[9]: {1,2,4,6} --> 1,2,9,10
7[10]: {1,3,5,6} --> 2,3,10,11
8[11]: {2,4,5,6} --> 3,4,11
9[14]: {1,2,4,5} --> 5,6,12
10[15]: {1,3,4,6} --> 6,7,12,13
11[16]: {2,3,5,6} --> 7,8,13
12[19]: {1,3,4,5} --> 9,10,14
13[20]: {2,3,4,6} --> 10,11,14
14[23]: {2,3,4,5} --> 12,13

// cell #1:
0[2]: {1,2,3,4,5} --> 1
1[7]: {1,2,3,4,6} --> 0,2
2[13]: {1,2,3,5,6} --> 1,3
3[18]: {1,2,4,5,6} --> 2,4
4[22]: {1,3,4,5,6} --> 3,5
5[25]: {2,3,4,5,6} --> 4

// cell #2:
0[6]: {2,3,4,5,6} --> 1
1[12]: {1,3,4,5,6} --> 0,2
2[17]: {1,2,4,5,6} --> 1,3
3[21]: {1,2,3,5,6} --> 2,4
4[24]: {1,2,3,4,6} --> 3,5
5[26]: {1,2,3,4,5} --> 4

// cell #3:
0[27]: {1,2,3,4,5,6}