Popcorn Makefile graphs:
stacked 2 ->
13 cells
stacked 3 ->
75 cells
stacked 4 ->
52 cells
stacked 5 ->
8 cells
stacked 2 ->
13 cells
stacked 2-3 ->
76 cells
stacked 2-4 ->
110 cells
stacked 2-5 ->
114 cells