codeon       : 0x000639eb
grade        : 12
bag (irrot)  : 0x000639eb
ordered(sol) : 0x000e73ed
cell @ c     : 0x00000000
cell @ hole  : 0x00000000
butterfly N  : 4096 cells visited
butterfly XOR: 0x0002bbdc
touches[c]   : 1  (measurement, outside algebra)