SETS OF FORM {1,i}
------------------
set={1, 2} n=10, Initial segment: 0, Period: 2
                          [[], [1, 0]]

set={1, 3} n=10, Initial segment: 1, Period: 2
                         [[1], [0, 2]]

set={1, 4} n=10, Initial segment: 3, Period: 2
                      [[1, 0, 2], [0, 1]]

set={1, 5} n=10, Initial segment: 1, Period: 2
                         [[1], [0, 2]]

set={1, 6} n=20, Initial segment: 5, Period: 2
                   [[1, 0, 2, 0, 2], [0, 1]]

set={1, 7} n=10, Initial segment: 1, Period: 2
                         [[1], [0, 2]]

SETS OF FORM {2,i}, i>2
-----------------------
set={2, 3} n=20, Initial segment: 7, Period: 2
                [[1, 1, 2, 0, 1, 0, 3], [0, 1]]

set={2, 4} n=20, Initial segment: 5, Period: 4
                [[1, 1, 2, 0, 2], [1, 3, 0, 3]]

set={2, 5} n=20, Initial segment: 9, Period: 2
             [[1, 1, 2, 0, 2, 0, 1, 0, 3], [0, 1]]

set={2, 6} n=10, Initial segment: 2, Period: 4
                     [[1, 1], [2, 0, 2, 2]]

seq(Gagraph(i,{2,7},{2,7}),i=1..30)
1, 1, 2, 0, 2, 2, 3, 0, 1, 0, 3, 0, 1, 0, 3, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0