// Cells and their vertices.
#0={0}
#1={1,2,3,4}
#2={5}

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

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

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

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