2 graphs : orbits=6
         16 graphs : orbits=7
         29 graphs : orbits=8
         32 graphs : orbits=9
         21 graphs : orbits=10
         14 graphs : orbits=11
         23 graphs : orbits=12
        218 graphs : orbits=13
       1071 graphs : orbits=14
       2658 graphs : orbits=15
       4002 graphs : orbits=16
       3375 graphs : orbits=17
       1408 graphs : orbits=18
 12869 graphs altogether from 123867 read; cpu=0.600 sec
>A ./countg --o -z6