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

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

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

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