2 extreme rays
2 support hyperplanes

embedding dimension = 2
rank = 2 (maximal)
external index = 1
internal index = 1

grading:
0 1 

degrees of extreme rays:
1: 2  

***********************************************************************

2 extreme rays:
 0 1
 6 1

2 support hyperplanes:
 -1 6
  1 0

