// Cells and their vertices.
#0={0}
#1={1,4,6,11,18}
#2={2,5,13,17,24}
#3={3,7,12}
#4={8,14,25}
#5={9,15,26}
#6={10,20,27}
#7={21,30,36}
#8={22,31,39}
#9={16,19,23,28}
#10={29,32,33,35,38}
#11={34}
#12={37}

// Induced graph on cells.
#0:.
#1:->#0.
#2:->#0.
#3:->#2.
#4:->#1.
#5:->#1.
#6:->#1,#2,#4,#5.
#7:->#1,#4.
#8:->#1,#5.
#9:->#1,#2,#3,#4,#5,#6,#7,#8.
#10:->#2,#4,#5,#6.
#11:->#7,#9,#10.
#12:->#8,#9,#10.

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

// cell #1:
0[1]: {2} --> 1,2
1[4]: {1} --> 0
2[6]: {3} --> 0,3
3[11]: {2} --> 2,4
4[18]: {1} --> 3

// cell #2:
0[2]: {1} --> 1
1[5]: {2} --> 0,2
2[13]: {3} --> 1,3
3[17]: {2} --> 2,4
4[24]: {1} --> 3

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

// cell #4:
0[8]: {1,3} --> 1
1[14]: {2} --> 0,2
2[25]: {3} --> 1

// cell #5:
0[9]: {1,3} --> 1
1[15]: {2} --> 0,2
2[26]: {3} --> 1

// cell #6:
0[10]: {1,2} --> 1
1[20]: {1,3} --> 0,2
2[27]: {2} --> 1

// cell #7:
0[21]: {1,2} --> 1
1[30]: {1,3} --> 0,2
2[36]: {2} --> 1

// cell #8:
0[22]: {1,2} --> 1
1[31]: {1,3} --> 0,2
2[39]: {2} --> 1

// cell #9:
0[16]: {2,3} --> 2
1[19]: {1,2} --> 2
2[23]: {1,3} --> 0,1,3
3[28]: {1,2} --> 2

// cell #10:
0[29]: {1,2} --> 3,4
1[32]: {2,3} --> 3
2[33]: {2,3} --> 4
3[35]: {1,3} --> 0,1
4[38]: {1,3} --> 0,2

// cell #11:
0[34]: {1,2,3}

// cell #12:
0[37]: {1,2,3}