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

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

// Individual cells.
// cell #0:
0[0]: {1} --> 2
1[1]: {3} --> 2
2[4]: {2} --> 0,1,3
3[10]: {3} --> 2

// cell #1:
0[2]: {2,3} --> 1
1[3]: {1,3} --> 0,2
2[7]: {1,2} --> 1,3
3[17]: {1,3} --> 2,4
4[22]: {2,3} --> 3

// cell #2:
0[5]: {1,3} --> 1
1[8]: {2} --> 0,2
2[13]: {3} --> 1

// cell #3:
0[6]: {1,3} --> 1
1[9]: {2} --> 0,2
2[14]: {3} --> 1

// cell #4:
0[11]: {2,3} --> 2
1[15]: {1,2} --> 2,3
2[18]: {1,3} --> 0,1
3[20]: {1,3} --> 1,4
4[25]: {2,3} --> 3

// cell #5:
0[12]: {2,3} --> 2
1[16]: {1,2} --> 2,3
2[19]: {1,3} --> 0,1
3[21]: {1,3} --> 1,4
4[26]: {2,3} --> 3

// cell #6:
0[23]: {1,2,3}

// cell #7:
0[24]: {1,2,3}