c FILE: myciel3.col
c SOURCE: Michael Trick (trick@cmu.edu)
c DESCRIPTION: Graph based on Mycielski transformation. 
c              Triangle free (clique number 2) but increasing
c              coloring number
p edge 11 20
e 1 2 1
e 1 4 2
e 1 7 3
e 1 9 4
e 2 3 5
e 2 6 6
e 2 8 7
e 3 5 8
e 3 7 9
e 3 10 10
e 4 5 11
e 4 6 12
e 4 10 13
e 5 8 14
e 5 9 15
e 6 11 16
e 7 11 17
e 8 11 18
e 9 11 19
e 10 11 20
