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

// Induced graph on cells.
#0:.
#1:->#0.
#2:->#0.
#3:->#1.
#4:->#1.
#5:->#1,#2,#3,#4.
#6:->#3,#5.
#7:->#4,#5.

// Individual cells.
// cell #0:
0[0]: {1} --> 2
1[1]: {3,4} --> 2
2[5]: {2} --> 0,1

// cell #1:
0[2]: {1,2} --> 1,2,7,8
1[4]: {1,4} --> 0,5
2[6]: {1,3} --> 0,6
3[8]: {1,3,4} --> 1,2,7,9
4[9]: {1,3,4} --> 1,2,8,9
5[10]: {2,4} --> 1,7,8,9
6[11]: {2,3} --> 2,7,8,9
7[13]: {2} --> 3
8[14]: {2} --> 4
9[15]: {3,4} --> 5,6

// cell #2:
0[3]: {2,3,4} --> 1
1[7]: {1,3,4} --> 0,2
2[12]: {1,2} --> 1

// cell #3:
0[18]: {2,3,4} --> 2
1[20]: {1,2} --> 2
2[23]: {1,3,4} --> 0,1

// cell #4:
0[19]: {2,3,4} --> 2
1[21]: {1,2} --> 2
2[24]: {1,3,4} --> 0,1

// cell #5:
0[16]: {1,2,4} --> 2
1[17]: {1,2,3} --> 2
2[22]: {1,3,4} --> 0,1,3
3[25]: {2,3,4} --> 2

// cell #6:
0[26]: {1,2,3,4}

// cell #7:
0[27]: {1,2,3,4}