That Adjacency List as Characters

  1     7 EOL(␊)
  2  0     1        0     2        0     3        0     4        0     6 EOL(␊)
  3  1     0 EOL(␊)
  4  2     0        2     1 EOL(␊)
  5  3     3        3     2        3     4 EOL(␊)
  6  4     0        4     3        4     5 EOL(␊)
  7  5     0        5     4 EOL(␊)
  8  6     4 EOL(␊)