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

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

// Individual cells.
// cell #0:
0[0]: {1} --> 1
1[1]: {2} --> 0,2
2[2]: {3} --> 1,3
3[4]: {4} --> 2,4
4[6]: {5} --> 3,5
5[11]: {6,7} --> 4

// cell #1:
0[3]: {1,2} --> 1
1[5]: {1,3} --> 0,2,3
2[7]: {1,4} --> 1,4,5
3[8]: {2,3} --> 1,5
4[9]: {1,5} --> 2,6,8
5[10]: {2,4} --> 2,3,6,7
6[12]: {2,5} --> 4,5,9,10
7[13]: {3,4} --> 5,9
8[14]: {1,6,7} --> 4,10
9[15]: {3,5} --> 6,7,11,12
10[16]: {2,6,7} --> 6,8,12
11[17]: {4,5} --> 9,13
12[18]: {3,6,7} --> 9,10,13
13[19]: {4,6,7} --> 11,12,14
14[20]: {5,6,7} --> 13