#nexus
[This file provided by Paul Lewis, from the NCL test suite. ]

begin taxa;
  dimensions ntax=8;
  taxlabels taxon_1 taxon_2 taxon_3 taxon_4 taxon_5 taxon_6 taxon_7 taxon_8;
end;

[!
*******************************************
* Non-interleaved, rectangular, diagonals *
*******************************************
]
begin distances;
  format triangle=both;
  matrix
    taxon_1    0   1   2   3   4   5   6   7
    taxon_2    1   0   8   9  10  11  12  13
    taxon_3    2   3   0  14  15  16  17  18
    taxon_4    4   5   6   0  19  20  21  22
    taxon_5    7   8   9  10   0  23  24  25
    taxon_6   11  12  13  14  15   0  26  27
    taxon_7   16  17  18  19  20  21   0  28
    taxon_8   22  23  24  25  26  27  28   0;
end;