# spaeth2_13.txt
#
#  Discussion:
#
#    Data matrix with 27 rows and 27 columns
#
#    The data values are integers between 0 and 3.
#
#    The data is to to symmetrically permuted so that numbers of the
#    same value are grouped together into blocks, as far as possible.
#
#  Modified:
#
#    30 April 2002
#
#  Reference:
#
#    Helmut Spaeth,
#    Cluster Analysis Algorithms 
#    for Data Reduction and Classification of Objects,
#    Ellis Horwood, 1980, page 209.
#
3 3 0 2 2 0 1 1 0 0 0 0 2 0 0 0 0 1 0 0 0 3 0 0 0 0 0 
3 3 0 3 0 0 1 1 0 0 0 0 2 0 0 1 0 0 1 0 0 3 0 0 0 0 0 
0 0 3 3 1 0 1 1 0 0 0 0 0 3 0 1 0 0 1 0 0 0 0 0 0 0 0 
2 3 3 3 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 
2 0 1 0 3 0 2 2 1 1 0 0 0 0 0 3 0 0 1 0 3 1 0 0 0 0 0 
0 0 0 0 0 3 0 0 2 1 0 0 0 0 0 0 1 0 0 1 0 0 3 0 0 1 2 
1 1 1 0 2 0 3 2 2 3 1 0 1 1 0 1 0 0 0 0 0 1 0 0 0 0 0 
1 1 1 0 2 0 2 3 2 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 1 2 2 2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 1 1 3 2 3 3 1 1 2 2 0 0 0 0 1 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 1 0 0 1 3 3 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 
0 0 0 0 0 0 0 0 0 1 3 3 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 
2 2 0 1 0 0 1 0 0 2 0 1 3 0 0 1 0 0 1 0 0 2 0 0 0 0 0 
0 0 3 1 0 0 1 0 0 2 0 1 0 3 0 1 0 0 1 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 1 0 0 3 1 0 0 0 0 1 
0 1 1 0 3 0 1 1 0 0 0 0 1 1 1 3 1 1 1 0 3 2 0 0 0 0 0 
0 0 0 1 0 1 0 0 0 0 0 0 0 0 1 1 3 0 0 1 1 0 1 0 0 0 3 
1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 3 0 0 0 1 0 0 2 0 0 
0 1 1 0 1 0 0 0 0 1 0 1 1 1 0 1 0 0 3 0 0 1 0 0 0 0 0 
0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 3 2 0 0 3 0 1 0 
0 0 0 0 3 0 0 0 0 0 0 0 0 0 3 3 1 0 0 2 3 0 0 1 0 1 1 
3 3 0 0 1 0 1 0 0 0 0 0 2 0 1 2 0 1 1 0 0 3 0 0 0 0 0 
0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 3 0 0 0 1 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 0 0 3 0 2 1 
0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 0 0 0 0 0 0 3 0 3 
0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 2 0 3 0 
0 0 0 0 0 2 0 0 0 0 0 0 0 0 1 0 3 0 0 0 1 0 1 1 3 0 3