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

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

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

// cell #1:
0[1]: {}

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